Speex: Fix SSE optimized inner product function.

The original implementation assumes the filter length is multiples of 8,
but it is only multiples of 4.

BUG=chromium:310386,chrome-os-partner:23275
TEST=on peppy, aplay 44.1k wav file, then in another terminal, aplay 48k wav file

Change-Id: I84c44ce885dc8b7cc7e38f86bf0a04968122e91b
Reviewed-on: https://chromium-review.googlesource.com/176210
Reviewed-by: Chih-Chung Chang <chihchung@chromium.org>
Commit-Queue: Chih-Chung Chang <chihchung@chromium.org>
Tested-by: Chih-Chung Chang <chihchung@chromium.org>
3 files changed