fixup WSOD on fulcrm_apiv2_install()

fulcrm_apiv2.install

@@ -1,10 +1,15 @@
 <?php /* -*- php -*- */
 
 function fulcrm_apiv2_install() {
+    try {
         $url = $GLOBALS[ 'base_url' ];
         $url = parse_url( $url, PHP_URL_HOST );
         $url = explode( '.', $url );
         $url = array_reverse( $url );
+    } catch ( Exception $e ) {
+        $url = array();
+    }
+    
     $url[] = fulcrm_uuid_uuid4();
     $url = implode( '.', $url );
     set_variable( 'fulcrm_apiv2_client_id', $url );