Make sure that "buf" is properly terminated. Actually, we could probably get

rid of "buf" completely, and replace it with face = syncChar[p] - '0', assuming
that syncChar only contains digits. But for now, let's make a minimal change.
This might fix bug #2826611 ("DRASCULA: Crash when smashing church window").

svn-id: r42776

engines/drascula/talk.cpp

@@ -803,6 +803,7 @@ void DrasculaEngine::talk_sync(const char *said, const char *filename, const cha
 
 	p = 0;
 
+	memset(buf, 0, sizeof(buf));
 	talkInit(filename);
 
 	do {