Bug #7468 Instance Manager fails to compile: thread_registry.cc

This fix icludes workaround for Irix compiler bug & removs some unused
variables (resulted in warnings)

server-tools/instance-manager/mysql_connection.cc

@@ -296,7 +296,6 @@ int Mysql_connection_thread::check_user(const char *user, const char *password)
 int Mysql_connection_thread::do_command()
 {
   char *packet;
-  uint old_timeout;
   ulong packet_length;
 
   /* We start to count packets from 0 for each new command */

server-tools/instance-manager/parse.cc

@@ -131,7 +131,6 @@ Command *parse_command(Command_factory *factory, const char *text)
   const char *instance_name;
   uint instance_name_len;
   Command *command;
-  const char *saved_text= text;
 
   Token tok1= shift_token(&text, &word_len);
 

server-tools/instance-manager/thread_registry.cc

@@ -148,6 +148,7 @@ int Thread_registry::cond_wait(Thread_info *info, pthread_cond_t *cond,
 
 void Thread_registry::deliver_shutdown()
 {
+  Thread_info *info;
   struct timespec shutdown_time;
   set_timespec(shutdown_time, 1);
 
@@ -161,7 +162,7 @@ void Thread_registry::deliver_shutdown()
     stopped alarm processing.
   */
   process_alarm(THR_SERVER_ALARM);
-  for (Thread_info *info= head.next; info != &head; info= info->next)
+  for (info= head.next; info != &head; info= info->next)
   {
     pthread_kill(info->thread_id, THREAD_KICK_OFF_SIGNAL);
     /*
@@ -190,7 +191,7 @@ void Thread_registry::deliver_shutdown()
     so this time everybody should be informed (presumably each worker can
     get CPU during shutdown_time.)
   */
-  for (Thread_info *info= head.next; info != &head; info= info->next)
+  for (info= head.next; info != &head; info= info->next)
   {
     pthread_kill(info->thread_id, THREAD_KICK_OFF_SIGNAL);
     if (info->current_cond)

server-tools/instance-manager/user_map.cc

@@ -123,7 +123,6 @@ int User_map::load(const char *password_file_name)
             1 +                               /* for ':' */
             1 +                               /* for newline */
             1];                               /* for trailing zero */
-  uint line_length;
   User *user;
   int rc= 1;