NetEq fuzzer: reduce max input size slightly to avoid timeout
NetEq fuzzer: reduce max input size slightly to avoid timeout

Notry=True

Bug: chromium:988542
Change-Id: I10610f29cd3bb67bf6aa6c40654a2b5a600969e4
Reviewed-on: https://webrtc-review.googlesource.com/c/src/+/149170
Commit-Queue: Henrik Lundin <b9599afb29b1fa4305dba8bb04f760bf0c9c9471@webrtc.org>
Reviewed-by: Ivo Creusen <ab68de427b265c46935558af10238a1ba5449aeb@webrtc.org>
Cr-Commit-Position: 972c6d2dc6dd5efdad1377c0d224e03eb8f276f7@{#28898}

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