Bug#32661 - Compiler warning in client/mysql.cc

Compiler warned about possible use of uninitialized variable
'warnings' in com_go().

Added LINT_INIT for 'warnings'.

client/mysql.cc

@@ -2158,6 +2158,7 @@ com_go(String *buffer,char *line __attribute__((unused)))
   ulong		timer, warnings;
   uint		error= 0;
   int           err= 0;
+  LINT_INIT(warnings);
 
   interrupted_query= 0;
   if (!status.batch)