Merged revisions 85850 via svnmerge from

https://origsvn.digium.com/svn/asterisk/branches/1.4

........
r85850 | file | 2007-10-16 11:52:22 -0300 (Tue, 16 Oct 2007) | 4 lines

Check to make sure a value has been given to the VMCOUNT dialplan function.
(closes issue #10996)
Reported by: marsosa

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git-svn-id: https://origsvn.digium.com/svn/asterisk/trunk@85851 65c4cc65-6c06-0410-ace0-fbb531ad65f3

funcs/func_vmcount.c

@@ -55,6 +55,9 @@ static int acf_vmcount_exec(struct ast_channel *chan, const char *cmd, char *arg
 
 	buf[0] = '\0';
 
+	if (ast_strlen_zero(argsstr))
+		return -1;
+
 	AST_STANDARD_APP_ARGS(args, argsstr);
 
 	if (strchr(args.vmbox, '@')) {