DRASCULA: Fix noise when playing sound.

The original engine skipped the first 32 and last 32 bytes of the
data when playing a sound. We did not do it in ScummVM which
resulted in noise at the start and/or end of some speech. This
was most noticeable with Spanish speech but also occurred
occasionally with English speech.

This fixes bug #7120 Drascula: Audio noise before every voice in
the game

engines/drascula/sound.cpp

@@ -169,8 +169,8 @@ void DrasculaEngine::MusicFadeout() {
 void DrasculaEngine::playFile(const char *fname) {
 	Common::SeekableReadStream *stream = _archives.open(fname);
 	if (stream) {
-		int startOffset = 0;
-		int soundSize = stream->size() - startOffset;
+		int startOffset = 32;
+		int soundSize = stream->size() - 64;
 
 		if (!strcmp(fname, "3.als") && soundSize == 145166 && _lang != kSpanish) {
 			// WORKAROUND: File 3.als with English speech files has a big silence at