CLEANUP: fcgi-app: Remove useless test on fcgi_conf pointer

fcgi_conf was already tested after allocation. No need to test it again.
This patch fixes the isssue #285.
diff --git a/src/fcgi-app.c b/src/fcgi-app.c
index 4db296f..aeda821 100644
--- a/src/fcgi-app.c
+++ b/src/fcgi-app.c
@@ -620,8 +620,6 @@
 	fcgi_conf->name = strdup(args[1]);
 	LIST_INIT(&fcgi_conf->param_rules);
 	LIST_INIT(&fcgi_conf->hdr_rules);
-	if (!fcgi_conf)
-		goto err;
 
 	/* Register the filter */
 	fconf = calloc(1, sizeof(*fconf));