Bug #45214 get_master_version_and_clock does not report error when queries fail

Append the patch for resolving the problems, which have been brought by commiting bug#45214.

mysql-test/suite/rpl/t/rpl_get_master_version_and_clock.test

@@ -15,7 +15,7 @@
 #
 
 source include/master-slave.inc;
-
+source include/have_debug.inc;
 #Test case 1: Try to get the value of the UNIX_TIMESTAMP from master under network disconnection
 connection slave;
 let $debug_saved= `select @@global.debug`;

sql/slave.cc

@@ -906,7 +906,6 @@ static int get_master_version_and_clock(MYSQL* mysql, Master_info* mi)
   MYSQL_RES *master_res= 0;
   MYSQL_ROW master_row;
   DBUG_ENTER("get_master_version_and_clock");
-  int query_re= 0;
 
   /*
     Free old description_event_for_queue (that is needed if we are in