LASTEXPRESS: Disable sound filter reset on each decoded block

The filter id should be computed from the sound entry status for each decoded block. The current code was resulting in blocks being skipped.

engines/lastexpress/data/snd.cpp

@@ -378,7 +378,7 @@ class LastExpress_ADPCMStream : public Audio::ADPCMStream {
 
 				// Get current filter
 				_currentFilterId = _nextFilterId;
-				_nextFilterId = -1;
+				//_nextFilterId = -1; // FIXME: the filter id should be recomputed based on the sound entry status for each block
 
 				// No filter: skip decoding
 				if (_currentFilterId == -1)