Use EXIT_FAILURE symbolic name as return code.

Signed-off-by: Andrew Borodin <aborodin@vmail.ru>

lib/tty/key.c

@@ -1576,7 +1576,7 @@ get_key_code (int no_delay)
                         if (this == NULL) {
                             /* Shouldn't happen */
                             fputs ("Internal error\n", stderr);
-                            exit (1);
+                            exit (EXIT_FAILURE);
                         }
                         goto nodelay_try_again;
                     }

lib/tty/tty-slang.c

@@ -254,7 +254,7 @@ tty_init (gboolean slow, gboolean ugly_lines)
         fprintf (stderr,
                  _("Screen size %dx%d is not supported.\n"
                    "Check the TERM environment variable.\n"), COLS, LINES);
-        exit (1);
+        exit (EXIT_FAILURE);
     }
 
     tcgetattr (fileno (stdin), &boot_mode);
@@ -394,7 +394,7 @@ tty_lowlevel_getch (void)
         fprintf (stderr,
                  "SLang_getkey returned SLANG_GETKEY_ERROR\n"
                  "Assuming EOF on stdin and exiting\n");
-        exit (1);
+        exit (EXIT_FAILURE);
     }
 
     return c;

lib/vfs/mc-vfs/mcserv.c

@@ -1309,7 +1309,7 @@ register_port (int port, int abort_if_fail)
     else {
 	fprintf (stderr, "Cannot register service with portmapper\n");
 	if (abort_if_fail)
-	    exit (1);
+	    exit (EXIT_FAILURE);
     }
 #else
     (void) port;
@@ -1403,5 +1403,5 @@ void
 vfs_die (const char *m)
 {
     fputs (m, stderr);
-    exit (1);
+    exit (EXIT_FAILURE);
 }

lib/vfs/mc-vfs/utilvfs.c

@@ -819,7 +819,7 @@ void
 vfs_die (const char *m)
 {
     message (D_ERROR, _("Internal error:"), "%s", m);
-    exit (1);
+    exit (EXIT_FAILURE);
 }
 
 char *

src/main.c

@@ -1452,7 +1452,7 @@ init_xterm_support (void)
     if (!termvalue || !(*termvalue))
     {
         fputs (_("The TERM environment variable is unset!\n"), stderr);
-        exit (1);
+        exit (EXIT_FAILURE);
     }
 
     /* Check mouse capabilities */
@@ -2225,7 +2225,7 @@ mc_main__setup_by_args (int argc, char *argv[])
         else
         {
             fputs ("No arguments given to the viewer\n", stderr);
-            exit (1);
+            exit (EXIT_FAILURE);
         }
         mc_run_mode = MC_RUN_VIEWER;
 #ifdef USE_DIFF_VIEW
@@ -2235,7 +2235,7 @@ mc_main__setup_by_args (int argc, char *argv[])
         if (argc < 3)
         {
             fputs ("There 2 files are required to diffviewer\n", stderr);
-            exit (1);
+            exit (EXIT_FAILURE);
         }
         else if (tmp != NULL)
         {

src/subshell.c

@@ -494,7 +494,7 @@ init_subshell (void)
         fprintf (stderr, "Cannot spawn the subshell process: %s\r\n", unix_error_string (errno));
         /* We exit here because, if the process table is full, the */
         /* other method of running user commands won't work either */
-        exit (1);
+        exit (EXIT_FAILURE);
     }
 
     if (subshell_pid == 0)
@@ -651,7 +651,7 @@ read_subshell_prompt (void)
             else
             {
                 fprintf (stderr, "select (FD_SETSIZE, &tmp...): %s\r\n", unix_error_string (errno));
-                exit (1);
+                exit (EXIT_FAILURE);
             }
         }
 
@@ -1033,7 +1033,7 @@ feed_subshell (int how, int fail_on_error)
             tcsetattr (STDOUT_FILENO, TCSANOW, &shell_mode);
             fprintf (stderr, "select (FD_SETSIZE, &read_set...): %s\r\n",
                      unix_error_string (errno));
-            exit (1);
+            exit (EXIT_FAILURE);
         }
 
         if (FD_ISSET (subshell_pty, &read_set))
@@ -1054,7 +1054,7 @@ feed_subshell (int how, int fail_on_error)
             {
                 tcsetattr (STDOUT_FILENO, TCSANOW, &shell_mode);
                 fprintf (stderr, "read (subshell_pty...): %s\r\n", unix_error_string (errno));
-                exit (1);
+                exit (EXIT_FAILURE);
             }
 
             if (how == VISIBLY)
@@ -1071,7 +1071,7 @@ feed_subshell (int how, int fail_on_error)
                 tcsetattr (STDOUT_FILENO, TCSANOW, &shell_mode);
                 fprintf (stderr, "read (subshell_pipe[READ]...): %s\r\n",
                          unix_error_string (errno));
-                exit (1);
+                exit (EXIT_FAILURE);
             }
 
             subshell_cwd[bytes - 1] = 0;        /* Squash the final '\n' */
@@ -1095,7 +1095,7 @@ feed_subshell (int how, int fail_on_error)
                 tcsetattr (STDOUT_FILENO, TCSANOW, &shell_mode);
                 fprintf (stderr,
                          "read (STDIN_FILENO, pty_buffer...): %s\r\n", unix_error_string (errno));
-                exit (1);
+                exit (EXIT_FAILURE);
             }
 
             for (i = 0; i < bytes; ++i)

src/widget.c

@@ -1422,7 +1422,7 @@ input_destroy (WInput * in)
     if (in == NULL)
     {
         fprintf (stderr, "Internal error: null Input *\n");
-        exit (1);
+        exit (EXIT_FAILURE);
     }
 
     new_input (in);