talloc_stack: reset stackframe pointers to NULL

This makes it easier to debug the code in future.

metze
(cherry picked from commit d23581b4d7a4936002c1d2d748836aead9215120)
(cherry picked from commit 29eb47bdaf9a80e819c30e4c1fac9d07040d32bc)

diff --git a/lib/util/talloc_stack.c b/lib/util/talloc_stack.c
index 58d22e378a6ea40d07159773909aef3a392102c5..f34d495294a6fce9e0483968a5d6177070cd3aee 100644 (file)
--- a/lib/util/talloc_stack.c
+++ b/lib/util/talloc_stack.c
@@ -103,8 +103,10 @@ static int talloc_pop(TALLOC_CTX *frame)
                        break;
                }
                talloc_free(ts->talloc_stack[i]);
+               ts->talloc_stack[i] = NULL;
        }
 
+       ts->talloc_stack[i] = NULL;
        ts->talloc_stacksize = i;
        return 0;
 }