Check for ao2_alloc failure in __ast_channel_internal_alloc.

Fix a crash that could occur in __ast_channel_internal_alloc if
ao2_alloc fails.

ASTERISK-24991 #close

Change-Id: I4ca89189eb22f907408cb87d0a1645cfe1314a90

diff --git a/main/channel_internal_api.c b/main/channel_internal_api.c
index 3f892ddef54aaa845b283b2a696c24153d975b50..3cfa6817be2d77e58f7235d22b755126e3f7d143 100644 (file)
--- a/main/channel_internal_api.c
+++ b/main/channel_internal_api.c
@@ -1344,6 +1344,10 @@ struct ast_channel *__ast_channel_internal_alloc(void (*destructor)(void *obj),
        tmp = ao2_alloc(sizeof(*tmp), destructor);
 #endif
 
+       if (!tmp) {
+               return NULL;
+       }
+
        if ((ast_string_field_init(tmp, 128))) {
                return ast_channel_unref(tmp);
        }