tree d77a82183c705cb4a0e2ebf290de217d86bc8af6
parent 9567c7b82cba21d3046bab5c9b1fe4e73f2629bf
author Colin Cross <ccross@android.com> 1457643687 -0800
committer Colin Cross <ccross@android.com> 1457650382 -0800

malloc_debug: fix multiplication overflow in debug_calloc

The over flow check for nmemb * bytes in debug_calloc is incorrect,
use the builtin overflow functions to check for multiplication and
addition overflow.

Change-Id: I3f1c13102621bc5380be1f69caa88dba2118f3cb
(cherry picked from commit 239838608dbe9917acddfe5a51d92350a4c8e135)