Fix a harmless compiler warning in the command-line shell code.

FossilOrigin-Name: a80527f60b4856e869f25e7b13afde351bc26a25

manifest

@@ -1,5 +1,5 @@
-C Fix\sto\sthe\sEXPLAIN\sindentation\slogic\sin\sthe\scommand-line\sshell.
-D 2014-05-29T20:17:57.027
+C Fix\sa\sharmless\scompiler\swarning\sin\sthe\scommand-line\sshell\scode.
+D 2014-05-29T20:39:59.843
 F Makefile.arm-wince-mingw32ce-gcc d6df77f1f48d690bd73162294bbba7f59507c72f
 F Makefile.in dd2b1aba364ff9b05de41086f74407f285c57670
 F Makefile.linux-gcc 91d710bdc4998cb015f39edf3cb314ec4f4d7e23
@@ -221,7 +221,7 @@ F src/random.c d10c1f85b6709ca97278428fd5db5bbb9c74eece
 F src/resolve.c 273d5f47c4e2c05b2d3d2bffeda939551ab59e66
 F src/rowset.c a9c9aae3234b44a6d7c6f5a3cadf90dce1e627be
 F src/select.c 7df17ec5506c2427576d412bee0e6ea740e12563
-F src/shell.c 33f6c0bc0e32eae099f7c2b79cfa7515b4b4702c
+F src/shell.c d4ec3e1473501e78f39627787c8d356c0f5452d1
 F src/sqlite.h.in 564fc23db33870b5096b20d72df7491ce0b8b74f
 F src/sqlite3.rc 11094cc6a157a028b301a9f06b3d03089ea37c3e
 F src/sqlite3ext.h 886f5a34de171002ad46fae8c36a7d8051c190fc
@@ -1173,7 +1173,7 @@ F tool/vdbe_profile.tcl 67746953071a9f8f2f668b73fe899074e2c6d8c1
 F tool/warnings-clang.sh f6aa929dc20ef1f856af04a730772f59283631d4
 F tool/warnings.sh 0abfd78ceb09b7f7c27c688c8e3fe93268a13b32
 F tool/win/sqlite.vsix deb315d026cc8400325c5863eef847784a219a2f
-P 48dce821a07ac29da6ce05e92cf3f6e52b6eb388
-R f3f6ddac33e05ba165213ff981b802f2
+P 8f916ed1e185ac728e00624d90e1d7bd2dda4469
+R e88640dd77d6321637c2833220e39939
 U drh
-Z 830218d29106127a2f4cf14b2b59a5e2
+Z 271b40f418717eb27805b21d52c6570f

manifest.uuid

@@ -1 +1 @@
-8f916ed1e185ac728e00624d90e1d7bd2dda4469
+a80527f60b4856e869f25e7b13afde351bc26a25

src/shell.c

@@ -2998,7 +2998,7 @@ static int do_meta_command(char *zLine, struct callback_data *p){
       zCmd = sqlite3_mprintf(strchr(azArg[i],' ')==0?"%z %s":"%z \"%s\"",
                              zCmd, azArg[i]);
     }
-    system(zCmd);
+    (void)system(zCmd);
     sqlite3_free(zCmd);
   }else