Try to catch a couple of cases in which parameters for malloc calls

could overflow.  Thanks to Timo Sirainen for the heads-up.

1 files changed, 1 insertions, 1 deletions

diff --git a/thread.c b/thread.c
index 0896c24f..bd45392f 100644
--- a/thread.c
+++ b/thread.c
@@ -591,7 +591,7 @@ THREAD *mutt_sort_subthreads (THREAD *thread, int init)
 
   top = thread;
 
-  array = safe_malloc ((array_size = 256) * sizeof (THREAD *));
+  array = safe_calloc ((array_size = 256), sizeof (THREAD *));
   while (1)
   {
     if (init || !thread->sort_key)