Bug#25146 Some warnings/errors not shown when using --show-warnings

 - Additional patch to fix compiler warnings


client/mysql.cc:
  Initialize warnings to 0 to avid compiler warning
  Call 'print_warnings' also when error occured
mysql-test/r/mysql.result:
  Change test to make is possible to see that second set of warnings
  are from second invocation of mysql
mysql-test/t/mysql.test:
  Change test to make is possible to see that second set of warnings
  are from second invocation of mysql

client/mysql.cc

@@ -2166,7 +2166,7 @@ com_go(String *buffer,char *line __attribute__((unused)))
 {
   char		buff[200], time_buff[32], *pos;
   MYSQL_RES	*result;
-  ulong		timer, warnings;
+  ulong		timer, warnings= 0;
   uint		error= 0;
   int           err= 0;
 
@@ -2316,7 +2316,8 @@ com_go(String *buffer,char *line __attribute__((unused)))
 
 end:
 
-  if (show_warnings == 1 && warnings >= 1) /* Show warnings if any */
+ /* Show warnings if any or error occured */
+  if (show_warnings == 1 && (warnings >= 1 || error))
     print_warnings();
 
   if (!error && !status.batch && 

mysql-test/r/mysql.result

@@ -184,7 +184,7 @@ End of 5.0 tests
 WARNING: --server-arg option not supported in this configuration.
 Warning (Code 1286): Unknown table engine 'nonexistent'
 Warning (Code 1266): Using storage engine MyISAM for table 't2'
-Warning (Code 1286): Unknown table engine 'nonexistent'
+Warning (Code 1286): Unknown table engine 'nonexistent2'
 Warning (Code 1266): Using storage engine MyISAM for table 't2'
 Error (Code 1050): Table 't2' already exists
 drop tables t1, t2;

mysql-test/t/mysql.test

@@ -312,7 +312,7 @@ remove_file $MYSQLTEST_VARDIR/tmp/bug29323.sql;
 
 # This should fail, with warnings as well
 --error 1
---exec $MYSQL --show-warnings test -e "create table t2 (id int) engine=nonexistent"
+--exec $MYSQL --show-warnings test -e "create table t2 (id int) engine=nonexistent2"
 
 drop tables t1, t2;