Fix comment in DecApp.cpp on partial output of a subpicture

source/App/DecoderApp/DecApp.cpp

@@ -275,7 +275,7 @@ uint32_t DecApp::decode()
           int skipFrameCounter = m_iSkipFrame;
           m_cDecLib.decode(nalu, m_iSkipFrame, m_iPOCLastDisplay, m_targetOlsIdx);
 
-          //Partially output the picture if it is a picture slice that is currently decoded
+          //Partially output the picture when a sub-picture is finalized
           if ( nalu.isSlice() )
           {
 			bPartialOutput = m_cDecLib.isLastSliceInSubpic();