Fix incorrect ToUnsigned in RTC event log.
Fix incorrect ToUnsigned in RTC event log.

Bug: None
Change-Id: I9038ac69c253975a4fc5e074aa13b2573efab9ef
Reviewed-on: https://webrtc-review.googlesource.com/c/src/+/181462
Reviewed-by: Elad Alon <9d66cb9c3c57b29e6fc055a4405dac15e20e28ee@webrtc.org>
Commit-Queue: Björn Terelius <efeae16329b3cb4ac5daf80d4bfda3344c027db3@webrtc.org>
Cr-Commit-Position: 972c6d2dc6dd5efdad1377c0d224e03eb8f276f7@{#32537}

ShiftMediaProject/libilbc,TimothyGu/libilbc,ShiftMediaProject/libilbc,ShiftMediaProject/libilbc,TimothyGu/libilbc,TimothyGu/libilbc,TimothyGu/libilbc,ShiftMediaProject/libilbc,TimothyGu/libilbc,ShiftMediaProject/libilbc