bzr push into mysql-trunk branch (tor.didriksen:4878 to 4879)

[Tor Didriksen]

 4879 Tor Didriksen	2012-11-01 [merge]
      merge 5.6 => trunk

    modified:
      sql/mysqld.cc
 4878 Tor Didriksen	2012-11-01 [merge]
      merge 5.6 => trunk

    modified:
      libmysql/libmysql.c
      tests/mysql_client_test.c
=== modified file 'sql/mysqld.cc'
--- a/sql/mysqld.cc	2012-10-25 13:34:04 +0000
+++ b/sql/mysqld.cc	2012-11-01 11:49:52 +0000
@@ -3260,9 +3260,9 @@ check_enough_stack_size()
 {
   uchar stack_top;
 
-  if (current_thd != 0)
-    return check_stack_overrun(current_thd, STACK_MIN_SIZE,
-                             &stack_top);
+  THD *my_thd= current_thd;
+  if (my_thd != NULL)
+    return check_stack_overrun(my_thd, STACK_MIN_SIZE, &stack_top);
   return 0;
 }
 #endif

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