Clock updates

apps/RenderCadenceCompositor/render/RenderCadenceClock.h

@@ -31,6 +31,7 @@ public:
 private:
 	Duration mFrameDuration;
 	TimePoint mNextRenderTime = Clock::now();
+	uint64_t mPendingFrameAdvance = 1;
 	uint64_t mOverrunCount = 0;
 	uint64_t mSkippedFrameCount = 0;
 };