This is a patch for "gsm" 1.0-pl13. It fixes a compile-time warning.

--- gsm-1.0-pl13.old/src/toast.c
+++ gsm-1.0-pl13/src/toast.c
@@ -7,6 +7,7 @@
 /* $Header: /tmp_amd/presto/export/kbs/jutta/src/gsm/RCS/toast.c,v 1.8 1996/07/02 10:41:04 jutta Exp $ */
 
 #include	"toast.h"
+extern FILE *fdopen();
 
 /*  toast -- lossy sound compression using the gsm library.
  */