Fix problem with detecting wheter im processes has shutdown cleanly

mysql-test/mysql-test-run.pl

@@ -3485,23 +3485,20 @@ sub im_stop($) {
     }
   }
 
-  # Check that all processes died.
+  # Check if all processes shutdown cleanly
+  my $clean_shutdown= 1; # Assum they did
 
-  my $clean_shutdown= 0;
-
-  while (1)
-  {
   if (kill (0, $instance_manager->{'pid'}))
   {
     mtr_warning("IM-main is still alive.");
-      last;
+    $clean_shutdown= 0;
   }
 
   if (defined $instance_manager->{'angel_pid'} &&
       kill (0, $instance_manager->{'angel_pid'}))
   {
     mtr_warning("IM-angel is still alive.");
-      last;
+    $clean_shutdown= 0;
   }
 
   foreach my $pid (@mysqld_pids)
@@ -3509,12 +3506,8 @@ sub im_stop($) {
     if (kill (0, $pid))
     {
       mtr_warning("Guarded mysqld ($pid) is still alive.");
-        last;
-      }
+      $clean_shutdown= 0;
     }
-
-    $clean_shutdown= 1;
-    last;
   }
 
   # Kill leftovers (the order is important).