The error paths free the memory referenced by each pointer in the
struct, but if the pointers are not initialized, random memory belonging
to other parts of the program could be freed instead. Zero out the
entire struct as soon as it is allocated to ensure that nothing is freed
if there is nothing to free.
Bug: webrtc:11446
Change-Id: I8a2985d1388477339351aa03107ee68925372d49
Reviewed-on: https://webrtc-review.googlesource.com/c/src/+/171121
Commit-Queue: Karl Wiberg <kwiberg@webrtc.org>
Reviewed-by: Karl Wiberg <kwiberg@webrtc.org>
Cr-Commit-Position: refs/heads/master@{#30852}