chore: tweak code

Author: zapcannon87

AVOS/Sources/Foundation/File/LCFile.m

@@ -188,7 +188,7 @@ - (instancetype)initWithLocalPath:(NSString *)localPath
         });
 
         NSNumber *fileSize = fileAttributes[NSFileSize];
-        _rawJSONData[kLCFile_metaData] = fileSize ? @{ kLCFile_size : fileSize } : @{};
+        _rawJSONData[kLCFile_metaData] = (fileSize != nil) ? @{ kLCFile_size : fileSize } : @{};
 
         _ACL = ({