Fix nullability issue with Image.network (flutter#22252)

ferhatb · web-flow · commit 8defec6e8ca1 · 2020-11-02T11:41:43.000-08:00
diff --git a/lib/web_ui/lib/src/ui/painting.dart b/lib/web_ui/lib/src/ui/painting.dart
@@ -461,9 +461,9 @@ String? _instantiateImageCodec(Uint8List list, engine.Callback<Codec> callback)
   return null;
 }
 
-Future<Codec?> webOnlyInstantiateImageCodecFromUrl(Uri uri,
+Future<Codec> webOnlyInstantiateImageCodecFromUrl(Uri uri,
     {engine.WebOnlyImageCodecChunkCallback? chunkCallback}) {
-  return _futurize<Codec?>((engine.Callback<Codec> callback) =>
+  return _futurize<Codec>((engine.Callback<Codec> callback) =>
       _instantiateImageCodecFromUrl(uri, chunkCallback, callback));
 }
 

Original file line number	Diff line number	Diff line change
`@@ -461,9 +461,9 @@ String? _instantiateImageCodec(Uint8List list, engine.Callback<Codec> callback)`
`461`	`461`	`return null;`
`462`	`462`	`}`
`463`	`463`
`464`		`-Future<Codec?> webOnlyInstantiateImageCodecFromUrl(Uri uri,`
	`464`	`+Future<Codec> webOnlyInstantiateImageCodecFromUrl(Uri uri,`
`465`	`465`	`{engine.WebOnlyImageCodecChunkCallback? chunkCallback}) {`
`466`		`- return _futurize<Codec?>((engine.Callback<Codec> callback) =>`
	`466`	`+ return _futurize<Codec>((engine.Callback<Codec> callback) =>`
`467`	`467`	`_instantiateImageCodecFromUrl(uri, chunkCallback, callback));`
`468`	`468`	`}`
`469`	`469`