Re-enabling SanitizerTest.MsanUninitialized.
Re-enabling SanitizerTest.MsanUninitialized.

Using EXPECT_DEATH instead of __msan_set_expect_umr.

Bug: webrtc:9116
Change-Id: I40222e920cd213d3d1366629023d4d1c4fbc35f9
Reviewed-on: https://webrtc-review.googlesource.com/79661
Reviewed-by: Karl Wiberg <2c708eb0a58047bf403399f50b3da33ffd2dd444@webrtc.org>
Reviewed-by: Alessio Bazzica <eed802d553432598d8dd1392efc4d65b5eefde4d@webrtc.org>
Commit-Queue: Mirko Bonadei <d2c43c210eae6feef04f53bae50885e8152edcca@webrtc.org>
Cr-Commit-Position: 972c6d2dc6dd5efdad1377c0d224e03eb8f276f7@{#23532}
ShiftMediaProject/libilbc,TimothyGu/libilbc,ShiftMediaProject/libilbc,ShiftMediaProject/libilbc,ShiftMediaProject/libilbc,TimothyGu/libilbc,ShiftMediaProject/libilbc,TimothyGu/libilbc,TimothyGu/libilbc,TimothyGu/libilbc