Fix H.264 start code position search.

This will address incorrect start code search
in a sequence like 00 00 00 00 00 01.
Thanks Noah.

R=noahric@chromium.org, wzh@webrtc.org

Review URL: https://webrtc-codereview.appspot.com/41159004

Cr-Commit-Position: refs/heads/master@{#8639}
git-svn-id: http://webrtc.googlecode.com/svn/trunk@8639 4adac7df-926f-26a2-2b94-8c16560cd09d
diff --git a/talk/app/webrtc/java/jni/androidmediaencoder_jni.cc b/talk/app/webrtc/java/jni/androidmediaencoder_jni.cc
index edefe20..081387e 100644
--- a/talk/app/webrtc/java/jni/androidmediaencoder_jni.cc
+++ b/talk/app/webrtc/java/jni/androidmediaencoder_jni.cc
@@ -822,7 +822,7 @@
       continue;
     }
     if (head[3] != 0x01) { // got 000000xx
-      head += 4; // xx != 1, continue searching.
+      head++; // xx != 1, continue searching.
       continue;
     }
     return (int32_t)(head - buffer);