Fix apparent typo: int -> char.
Fix apparent typo: int -> char.

The surrounding similar methods all used unsigned char, using unsigned int in
this case looks like an accident, especially since the function passes on the
value in question to a function expecting a uint8.

BUG=none
TEST=none
R=mflodman@webrtc.org

Review URL: https://webrtc-codereview.appspot.com/40529004

git-svn-id: a556c8bde68cedbc0208a1ffc78b06e9cd07f676@8228 4adac7df-926f-26a2-2b94-8c16560cd09d

sippet/talk,dcpang/fatline-libjingle,dcpang/fatline-libjingle,sippet/talk,sippet/talk,dcpang/fatline-libjingle,sippet/talk,sippet/talk,dcpang/fatline-libjingle,dcpang/fatline-libjingle