From 2a27435f7e2bc3125152e528b41b0a4112e09092 Mon Sep 17 00:00:00 2001
From: Christopher Snowhill <kode54@gmail.com>
Date: Thu, 17 Feb 2022 03:00:35 -0800
Subject: [PATCH] Dictionary merge: Correctly drop empty data tags

This allows for TagLib to handle artwork reading where the file built-in
readers fail, such as the FFmpeg reader, which would require parsing the
stream data for artwork packets, a really wacky convention to have.

Signed-off-by: Christopher Snowhill <kode54@gmail.com>
---
 Utils/NSDictionary+Merge.m | 3 +++
 1 file changed, 3 insertions(+)

diff --git a/Utils/NSDictionary+Merge.m b/Utils/NSDictionary+Merge.m
index 6769e28a7..37312c733 100644
--- a/Utils/NSDictionary+Merge.m
+++ b/Utils/NSDictionary+Merge.m
@@ -20,6 +20,9 @@
 			} else if([objTarget isKindOfClass:[NSNumber class]]) {
 				NSNumber *val = (NSNumber *)objTarget;
 				isEmpty = [val isEqualTo:@(0)];
+			} else if([objTarget isKindOfClass:[NSData class]]) {
+				NSData *val = (NSData *)objTarget;
+				isEmpty = [val length] == 0;
 			}
 			if(isEmpty) {
 				[result setObject:obj forKey:key];