Work around with issue 971 (signal_processing_unittests fails memcheck when compiled with GCC 4.6). Review URL: https://webrtc-codereview.appspot.com/935008
Work around with issue 971 (signal_processing_unittests fails memcheck when compiled with GCC 4.6).
Review URL: https://webrtc-codereview.appspot.com/935008

Cr-Mirrored-From: https://chromium.googlesource.com/external/webrtc
Cr-Mirrored-Commit: ff137edc5321c8e8de01ccfcd873ca13d3d4b01c

sippet/webrtc,sippet/webrtc,sippet/webrtc,sippet/webrtc,sippet/webrtc,sippet/webrtc