Index: formats/format_wav_gsm.c
===================================================================
RCS file: /usr/cvsroot/asterisk/formats/format_wav_gsm.c,v
retrieving revision 1.22
diff -u -r1.22 format_wav_gsm.c
--- formats/format_wav_gsm.c	4 Aug 2004 00:42:49 -0000	1.22
+++ formats/format_wav_gsm.c	27 Aug 2004 02:42:49 -0000
@@ -390,6 +390,11 @@
 static void wav_close(struct ast_filestream *s)
 {
 	char zero = 0;
+	if (ast_mutex_lock(&wav_lock)) {
+		ast_log(LOG_WARNING, "Unable to lock wav list\n");
+		return;
+	}
+	glistcnt--;
 	ast_mutex_unlock(&wav_lock);
 	ast_update_use_count();
 	/* Pad to even length */