fixed various pb2 test failures on windows.

mysql-test/r/bug46080.result

@@ -2,8 +2,8 @@
 # Bug #46080: group_concat(... order by) crashes server when
 #  sort_buffer_size cannot allocate
 #
-call mtr.add_suppression("Out of memory at line .*, 'my_alloc.c'");
-call mtr.add_suppression("needed .* byte .*k., memory in use: .* bytes .*k");
+call mtr.add_suppression("Out of memory at line .*, '.*my_alloc.c'");
+call mtr.add_suppression("needed .* byte (.*k)., memory in use: .* bytes (.*k)");
 CREATE TABLE t1(a CHAR(255));
 INSERT INTO t1 VALUES ('a');
 SET @@SESSION.sort_buffer_size=5*16*1000000;

mysql-test/t/bug46080.test

@@ -3,8 +3,8 @@
 --echo #  sort_buffer_size cannot allocate
 --echo #
 
-call mtr.add_suppression("Out of memory at line .*, 'my_alloc.c'");
-call mtr.add_suppression("needed .* byte .*k., memory in use: .* bytes .*k");
+call mtr.add_suppression("Out of memory at line .*, '.*my_alloc.c'");
+call mtr.add_suppression("needed .* byte (.*k)., memory in use: .* bytes (.*k)");
 
 CREATE TABLE t1(a CHAR(255));
 INSERT INTO t1 VALUES ('a');

sql/event_scheduler.cc

@@ -235,8 +235,9 @@ event_scheduler_thread(void *arg)
   if (!res)
     scheduler->run(thd);
 
+  DBUG_LEAVE;                               // Against gcc warnings
   my_thread_end();
-  DBUG_RETURN(0);                               // Against gcc warnings
+  return 0;
 }