Fix Visual Studio build warning

Fixed signed/unsigned mismatch warning.

Change-Id: I1634d0634de752f4b8baa8059e8f3e2891fa53b6

diff --git a/examples/vp9cx_set_ref.c b/examples/vp9cx_set_ref.c
index acf79dbca1b022031ffee6d9f8f0d910ef39d080..196936a53bb0f0dad9a93ead7741aa2912e7a712 100644 (file)
--- a/examples/vp9cx_set_ref.c
+++ b/examples/vp9cx_set_ref.c
@@ -306,7 +306,7 @@ int main(int argc, char **argv) {
   unsigned int frame_out = 0;
 
   // The frame number to set reference frame on
-  int update_frame_num = 0;
+  unsigned int update_frame_num = 0;
   int mismatch_seen = 0;
 
   const int fps = 30;