* rocDecode/HEVC: Fixed the missing output picture issue on certain streams. (#89)

- When we hit IRAP (Intra Random Access Point) picture and need to bump all remaining decoded pictures from DPB, call display callback immediately, instead of delaying the callback to the IRAP decode process.

src/parser/hevc_parser.cpp

@@ -2230,10 +2230,8 @@ int HEVCVideoParser::MarkOutputPictures() {
 
         if (!no_output_of_prior_pics_flag) {
             // Bump the remaining pictures
-            while (dpb_buffer_.num_needed_for_output) {
-                if (BumpPicFromDpb() != PARSER_OK) {
-                    return PARSER_FAIL;
-                }
+            if (FlushDpb() != PARSER_OK) {
+                return PARSER_FAIL;
             }
         }