remove almost all of the checks of the result from ast_strdupa() or alloca().

As it turns out, all of these checks were useless, because alloca will never
return NULL.


git-svn-id: https://origsvn.digium.com/svn/asterisk/trunk@26451 65c4cc65-6c06-0410-ace0-fbb531ad65f3

res/res_agi.c

@@ -138,8 +138,6 @@ static int launch_netscript(char *agiurl, char *argv[], int *fds, int *efd, int
 
 	/* agiusl is "agi://host.domain[:port][/script/name]" */
 	host = ast_strdupa(agiurl + 6);	/* Remove agi:// */
-	if (!host)
-		return -1;
 	/* Strip off any script name */
 	if ((c = strchr(host, '/'))) {
 		*c = '\0';