Merged revisions 197538 via svnmerge from

https://origsvn.digium.com/svn/asterisk/trunk

........
  r197538 | file | 2009-05-28 11:51:43 -0300 (Thu, 28 May 2009) | 5 lines
  
  Fix a bug in stringfields where it did not actually free the pools of memory.
  
  (closes issue #15074)
  Reported by: pj
........


git-svn-id: https://origsvn.digium.com/svn/asterisk/branches/1.6.1@197540 65c4cc65-6c06-0410-ace0-fbb531ad65f3

main/utils.c

@@ -1530,7 +1530,11 @@ int __ast_string_field_init(struct ast_string_field_mgr *mgr, struct ast_string_
 		return add_string_pool(mgr, pool_head, needed, file, lineno, func);
 	}
 	if (needed < 0) {		/* reset all pools */
-		/* nothing to do */
+		if (*pool_head == NULL) {
+			ast_log(LOG_WARNING, "trying to reset empty pool\n");
+			return -1;
+		}
+		cur = *pool_head;
 	} else {			/* preserve the last pool */
 		if (*pool_head == NULL) {
 			ast_log(LOG_WARNING, "trying to reset empty pool\n");