small fix for 7944

git-svn-id: https://origsvn.digium.com/svn/asterisk/trunk@42891 65c4cc65-6c06-0410-ace0-fbb531ad65f3

diff --git a/main/loader.c b/main/loader.c
index 30f5aa6600b224eb8865b95d5c7ae0108e61cc11..3b0005a6aaae5009af5399dd37bc609e5a7de396 100644 (file)
--- a/main/loader.c
+++ b/main/loader.c
@@ -199,6 +199,17 @@ struct ast_module_user *__ast_module_user_add(struct ast_module *mod,
 
 void __ast_module_user_remove(struct ast_module *mod, struct ast_module_user *u)
 {
+
+       if (u <= 0) {   
+               ast_log(LOG_ERROR,"ast_module_user invalid can not remove \n");         
+               return;
+       }
+
+       if (mod <= 0) {
+               ast_log(LOG_ERROR,"ast_module invalid can not remove \n");
+               return;
+       }
+       
        AST_LIST_LOCK(&mod->users);
        AST_LIST_REMOVE(&mod->users, u, entry);
        AST_LIST_UNLOCK(&mod->users);