Fix Visual Studio 2015 WebRtc x86 build.

webrtc/modules/audio_coding/codecs/isac/main/test/simpleKenny.c

Index: webrtc/modules/audio_coding/codecs/isac/main/test/simpleKenny.c
diff --git a/webrtc/modules/audio_coding/codecs/isac/main/test/simpleKenny.c b/webrtc/modules/audio_coding/codecs/isac/main/test/simpleKenny.c
index e8116ffdf863ffd8eae78bd269d09b63af979b5b..1a1697fdae28aa51ea51d8c02803a11286d9a7e0 100644
--- a/webrtc/modules/audio_coding/codecs/isac/main/test/simpleKenny.c
+++ b/webrtc/modules/audio_coding/codecs/isac/main/test/simpleKenny.c
@@ -17,8 +17,10 @@
 
 #ifdef WIN32
 #include "windows.h"
+#ifndef CLOCKS_PER_SEC
 #define CLOCKS_PER_SEC 1000
 #endif
+#endif
 
 #include <ctype.h>
 #include <math.h>
@@ -218,7 +220,7 @@ int main(int argc, char* argv[]) {
   _makepath(bitrateFileName, outDrive, outPath, "bitrate", ".txt");
 
   bitrateFile = fopen(bitrateFileName, "a");
-  fprintf(bitrateFile, "%  %%s  \n", inname);
+  fprintf(bitrateFile, "%%  %s  \n", inname);
 #endif
 
   printf("\n");