== Sequencer ==

Fixes Bug #5239 reported by Anders Gudmundson:
- Sequencer eats memory like popcorn with metastrips
- Crash on gaps in metastrips

Both were introduces by my last patch that added "Speed Control".

I also forgot to add "Speed Control" and "Color" to the "Add"-menu.
(Simply haven't noticed, I use the spacebar all the time...)

source/blender/src/sequence.c

@@ -955,6 +955,7 @@ static void do_build_seq_recursively_impl(Sequence * seq, int cfra)
 	se = seq->curelem = give_stripelem(seq, cfra);
 
 	if(se) {
+		int unref_meta = FALSE;
 		if(seq->seqbase.first) {
 			Sequence * seqmshown= get_shown_seq_from_metastrip(seq, cfra);
 			if (seqmshown) {
@@ -963,6 +964,8 @@ static void do_build_seq_recursively_impl(Sequence * seq, int cfra)
 				else if(cfra> seq->start+seq->len-1) 
 					do_build_seq_recursively(seqmshown, seq->start + seq->len-1);
 				else do_build_seq_recursively(seqmshown, cfra);
+
+				unref_meta = TRUE;
 			}
 		}
 
@@ -971,6 +974,10 @@ static void do_build_seq_recursively_impl(Sequence * seq, int cfra)
 		} else {
 			do_build_seq_ibuf(seq, cfra);
 		}
+
+		if(unref_meta && seq->curelem->ibuf) {
+			IMB_cache_limiter_unref(seq->curelem->ibuf);
+		}
 	}
 }
 
@@ -1141,8 +1148,9 @@ ImBuf *give_ibuf_seq(int rectx, int recty, int cfra, int chanshown)
 		return 0;
 	}
 
-	if(seqfirst->curelem->ibuf)
+	if (seqfirst->curelem->ibuf) {
 		IMB_cache_limiter_unref(seqfirst->curelem->ibuf);
+	}
 
 	return seqfirst->curelem->ibuf;