Use existing decoder for converting values.

Author: kangaroo5383

Parse/PFObject.m

@@ -1634,7 +1634,9 @@ + (instancetype)objectWithClassName:(NSString *)className {
 
 + (instancetype)objectWithClassName:(NSString *)className dictionary:(NSDictionary *)dictionary {
     PFObject *object = [self objectWithClassName:className];
-    [object _mergeAfterSaveWithResult:dictionary decoder:[PFDecoder objectDecoder]];
+    [dictionary enumerateKeysAndObjectsUsingBlock:^(id key, id obj, BOOL *stop) {
+        object[key] = [[PFDecoder objectDecoder] decodeObject:obj];
+    }];
     return object;
 }