Changes in the wav_file implementation in order to
avoid clang warnings.
The changes does not change any of the functionality
in the code.

BUG=webrtc:163

Review URL: https://codereview.webrtc.org/1710083006

Cr-Original-Commit-Position: refs/heads/master@{#11705}
Cr-Mirrored-From: https://chromium.googlesource.com/external/webrtc
Cr-Mirrored-Commit: d1f718bb1ead2d0287bdb75ff8772ac74636b2d3
2 files changed