Don't crash when typing 'core set verbose' or 'core set debug' by themselves.

(closes issue #14219)
Reported by: jamesgolovich
Patches:
      asterisk-setverbosecrash.diff.txt uploaded by jamesgolovich (license 176)


git-svn-id: https://origsvn.digium.com/svn/asterisk/trunk@168626 65c4cc65-6c06-0410-ace0-fbb531ad65f3

main/cli.c

@@ -415,7 +415,7 @@ static char *handle_verbose(struct ast_cli_entry *e, int cmd, struct ast_cli_arg
 	 * we are guaranteed to be called with argc >= e->args;
 	 */
 
-	if (argc < e->args)
+	if (argc <= e->args)
 		return CLI_SHOWUSAGE;
 	if (!strcasecmp(argv[e->args - 1], "debug")) {
 		dst = &option_debug;