Make use of local variable as intended

Author: matthurne

src/main/java/com/commercehub/jclouds/gridfs/blobstore/GridFSBlobStore.java

@@ -57,7 +57,7 @@ protected GridFSBlobStore(ProviderMetadata providerMetadata, BlobStoreContext co
 
         String endpoint = providerMetadata.getEndpoint();
         if (endpoint.startsWith(GRIDFS_URI_SCHEME)) {
-            List<ServerAddress> addresses = parseServerAddresses(providerMetadata.getEndpoint());
+            List<ServerAddress> addresses = parseServerAddresses(endpoint);
             if (addresses.size() > 1) {
                 this.mongo = new MongoClient(addresses);
             } else {