Delete MessageData when a message is posted to a quitting MessageQueue
Delete MessageData when a message is posted to a quitting MessageQueue

Bug: webrtc:9913
Change-Id: Id60f537eb0049995c9f0837e3a03ca3a3dd90577
Reviewed-on: https://webrtc-review.googlesource.com/c/107639
Reviewed-by: Karl Wiberg <2c708eb0a58047bf403399f50b3da33ffd2dd444@webrtc.org>
Commit-Queue: Niels Moller <0057859e47d61d90529d0f66d9ef692cefedb46a@webrtc.org>
Cr-Commit-Position: 972c6d2dc6dd5efdad1377c0d224e03eb8f276f7@{#25365}
TimothyGu/libilbc,ShiftMediaProject/libilbc,ShiftMediaProject/libilbc,TimothyGu/libilbc,ShiftMediaProject/libilbc,TimothyGu/libilbc,TimothyGu/libilbc,ShiftMediaProject/libilbc,ShiftMediaProject/libilbc,TimothyGu/libilbc