Fix harmless compiler warnings in the showdb utility program.

FossilOrigin-Name: 27c27daa3324b7c9323acfb972330367630bb64e

manifest

@@ -1,5 +1,5 @@
-C Fix\sa\spotential\sover-size\sand\shence\sundefined\sshift\soperation.
-D 2014-01-28T18:53:29.749
+C Fix\sharmless\scompiler\swarnings\sin\sthe\sshowdb\sutility\sprogram.
+D 2014-01-28T20:36:22.236
 F Makefile.arm-wince-mingw32ce-gcc d6df77f1f48d690bd73162294bbba7f59507c72f
 F Makefile.in 2ef13430cd359f7b361bb863504e227b25cc7f81
 F Makefile.linux-gcc 91d710bdc4998cb015f39edf3cb314ec4f4d7e23
@@ -1132,7 +1132,7 @@ F tool/opcodeDoc.awk b3a2a3d5d3075b8bd90b7afe24283efdd586659c
 F tool/pagesig.c ff0ca355fd3c2398e933da5e22439bbff89b803b
 F tool/restore_jrnl.tcl 6957a34f8f1f0f8285e07536225ec3b292a9024a
 F tool/rollback-test.c 9fc98427d1e23e84429d7e6d07d9094fbdec65a5
-F tool/showdb.c 525ecc443578647703051308ad50a93de6ba2c4b
+F tool/showdb.c 1f3fe634d6f690b8d39ab1b9fd34583d468921e1
 F tool/showjournal.c b62cecaab86a4053d944c276bb5232e4d17ece02
 F tool/showwal.c 3f7f7da5ec0cba51b1449a75f700493377da57b5
 F tool/soak1.tcl 8d407956e1a45b485a8e072470a3e629a27037fe
@@ -1152,7 +1152,7 @@ F tool/vdbe-compress.tcl 0cf56e9263a152b84da86e75a5c0cdcdb7a47891
 F tool/warnings-clang.sh f6aa929dc20ef1f856af04a730772f59283631d4
 F tool/warnings.sh d1a6de74685f360ab718efda6265994b99bbea01
 F tool/win/sqlite.vsix 030f3eeaf2cb811a3692ab9c14d021a75ce41fff
-P 5e3b9ecc7b2b2e50952de819b99bafdb7b9ff59e
-R 706dcce3a402caa9db92672703e679ae
+P 6379b0729521146bc4ec27a9924492c7dc1d8a31
+R d624107de1307ff82acc1c4254272e47
 U drh
-Z e7afb21bdb8343de7138a61b1fa9482c
+Z ce78bc9f9aa25be3c31879ef495a76f2

manifest.uuid

@@ -1 +1 @@
-6379b0729521146bc4ec27a9924492c7dc1d8a31
+27c27daa3324b7c9323acfb972330367630bb64e

tool/showdb.c

@@ -119,7 +119,7 @@ static unsigned char *print_byte_range(
 /*
 ** Print an entire page of content as hex
 */
-static print_page(int iPg){
+static void print_page(int iPg){
   int iStart;
   unsigned char *aData;
   iStart = (iPg-1)*pagesize;
@@ -131,7 +131,7 @@ static print_page(int iPg){
 
 /* Print a line of decode output showing a 4-byte integer.
 */
-static print_decode_line(
+static void print_decode_line(
   unsigned char *aData,      /* Content being decoded */
   int ofst, int nByte,       /* Start and size of decode */
   const char *zMsg           /* Message to append */
@@ -428,7 +428,7 @@ static void decode_trunk_page(
   int detail,           /* Show leaf pages if true */
   int recursive         /* Follow the trunk change if true */
 ){
-  int n, i, k;
+  int n, i;
   unsigned char *a;
   while( pgno>0 ){
     a = getContent((pgno-1)*pagesize, pagesize);
@@ -495,7 +495,6 @@ static void page_usage_cell(
   int cellno              /* Index of the cell on the page */
 ){
   int i;
-  int nDesc = 0;
   int n = 0;
   i64 nPayload;
   i64 rowid;
@@ -677,7 +676,7 @@ static void page_usage_report(const char *zDbName){
     if( rc==SQLITE_OK ){
       while( sqlite3_step(pStmt)==SQLITE_ROW ){
         int pgno = sqlite3_column_int(pStmt, 2);
-        page_usage_btree(pgno, 0, 0, sqlite3_column_text(pStmt, 1));
+        page_usage_btree(pgno, 0, 0, (const char*)sqlite3_column_text(pStmt,1));
       }
     }else{
       printf("ERROR: cannot query database: %s\n", sqlite3_errmsg(db));
@@ -835,7 +834,6 @@ int main(int argc, char **argv){
         free(a);
         continue;
       }else if( zLeft && zLeft[0]=='t' ){
-        unsigned char *a;
         int detail = 0;
         int recursive = 0;
         int i;
@@ -861,4 +859,5 @@ int main(int argc, char **argv){
     }
   }
   close(db);
+  return 0;
 }