fix for DebugBitstream functionality with multiple NAL units

source/Lib/DecoderLib/DecLib.cpp

@@ -174,6 +174,9 @@ bool tryDecodePicture( Picture* pcEncPic, const int expectedPoc, const std::stri
                   {
                     pcEncPic->slices.push_back( new Slice );
                     pcEncPic->slices.back()->initSlice();
+                    pcEncPic->slices.back()->setPPS( pcEncPic->slices[0]->getPPS() );
+                    pcEncPic->slices.back()->setSPS( pcEncPic->slices[0]->getSPS() );
+                    pcEncPic->slices.back()->setPic( pcEncPic->slices[0]->getPic() );
                   }
                   pcEncPic->slices[i]->copySliceInfo( pic->slices[i], false );
                 }