Reformat Code

app/src/main/java/com/hippo/unifile/UriOutputStream.java

@@ -38,7 +38,7 @@ import java.io.OutputStream;
 // TODO need more test
 class UriOutputStream extends FileOutputStream {
 
-    private ParcelFileDescriptor mPfd;
+    private final ParcelFileDescriptor mPfd;
 
     private UriOutputStream(ParcelFileDescriptor pfd, FileDescriptor fd) {
         super(fd);