Added check on CVPixelBufferPoolCreatePixelBuffer to avoid crashes when it fails.
Added check on CVPixelBufferPoolCreatePixelBuffer to avoid crashes when it fails.

hanhailong/SCRecorder,renjithn/SCRecorder,LeoRunning/SCRecorder,hojustin/SCRecorder,wubingwell/SCRecorder,MaticKunaver/SCRecorder,jspenc72/SCRecorder,twomedia/SCRecorder,SuPair/SCRecorder,renjithn/SCRecorder,Neal2014/SCRecorder,jpike88/SCRecorder,MaticKunaver/SCRecorder,yangyi/SCRecorder,yangyi/SCRecorder,RevealHQ/SCRecorder,xezero/SCRecorder,hojustin/SCRecorder,olivierlesnicki/SCRecorder,rudywen/SCRecorder,CaptainKurt/SCRecorder,JarryChang/SCRecorder,xezero/SCRecorder,rFlex/SCRecorder,tisohjung/SCRecorder,RevealHQ/SCRecorder,LeoRunning/SCRecorder,henriquevelloso/SCRecorder,rudywen/SCRecorder,JarryChang/SCRecorder,hojustin/SCRecorder,olivierlesnicki/SCRecorder,Neal2014/SCRecorder,tisohjung/SCRecorder,hanhailong/SCRecorder,CaptainKurt/SCRecorder,imjerrybao/SCRecorder,gank0326/cutVideo,skonb/SCRecorder,skonb/SCRecorder,jspenc72/SCRecorder,fjcaetano/SCRecorder,henriquevelloso/SCRecorder,jpike88/SCRecorder,fjcaetano/SCRecorder,MaticKunaver/SCRecorder,SuPair/SCRecorder,wubingwell/SCRecorder,rFlex/SCRecorder,gank0326/cutVideo,twomedia/SCRecorder,CaptainKurt/SCRecorder,imjerrybao/SCRecorder