If somehow buffer is shared between other locations, reallocating it may
lead to use-after-free error.
Bug: none
Change-Id: I01a0b722cfe6ee0e18546248f1dfb7b8ac3b7217
Reviewed-on: https://webrtc-review.googlesource.com/c/src/+/150884
Reviewed-by: Niels Moller <nisse@webrtc.org>
Commit-Queue: Ilya Nikolaevskiy <ilnik@webrtc.org>
Cr-Commit-Position: refs/heads/master@{#29021}