silk: Fix incorrect ifdef in debug.c

Signed-off-by: Mark Harris <mark.hsj@gmail.com>

silk/debug.c

@@ -37,14 +37,13 @@ POSSIBILITY OF SUCH DAMAGE.
 
 #if SILK_TIC_TOC
 
-#ifdef _WIN32
-
 #if (defined(_WIN32) || defined(_WINCE))
 #include <windows.h>    /* timer */
 #else   /* Linux or Mac*/
 #include <sys/time.h>
 #endif
 
+#ifdef _WIN32
 unsigned long silk_GetHighResolutionTime(void) /* O  time in usec*/
 {
     /* Returns a time counter in microsec   */