Fix warning: Implicit conversion from enum type CFPropertyListMutabilityOptions to NSPropertyListReadOptions

Author: Kjuly

FCModel/FCModel.m

@@ -258,11 +258,11 @@ - (id)unserializedRepresentationOfDatabaseValue:(id)databaseValue forPropertyNam
             return [databaseValue isKindOfClass:NSDate.class] ? databaseValue : [NSDate dateWithTimeIntervalSince1970:[databaseValue doubleValue]];
         } else if (propertyClass == NSDictionary.class) {
             if ([databaseValue isKindOfClass:NSDictionary.class]) return databaseValue;
-            NSDictionary *dict = [NSPropertyListSerialization propertyListWithData:databaseValue options:kCFPropertyListImmutable format:NULL error:NULL];
+            NSDictionary *dict = [NSPropertyListSerialization propertyListWithData:databaseValue options:NSPropertyListImmutable format:NULL error:NULL];
             return dict && [dict isKindOfClass:NSDictionary.class] ? dict : @{};
         } else if (propertyClass == NSArray.class) {
             if ([databaseValue isKindOfClass:NSArray.class]) return databaseValue;
-            NSArray *array = [NSPropertyListSerialization propertyListWithData:databaseValue options:kCFPropertyListImmutable format:NULL error:NULL];
+            NSArray *array = [NSPropertyListSerialization propertyListWithData:databaseValue options:NSPropertyListImmutable format:NULL error:NULL];
             return array && [array isKindOfClass:NSArray.class] ? array : @[];
         } else if (propertyClass == NSDecimalNumber.class) {
             return [databaseValue isKindOfClass:NSDecimalNumber.class] ? databaseValue : [NSDecimalNumber decimalNumberWithDecimal:[databaseValue decimalValue]];