LibCompress: Let GzipDecompressor take a MaybeOwned<Stream>

Author: https://github.com/timschumi
Commit: 90780d9ade
Pull-request: https://github.com/SerenityOS/serenity/pull/20652
Reviewed-by: https://github.com/LucasChollet ✅

Userland/Libraries/LibCompress/Gzip.h

@@ -42,7 +42,7 @@ struct Flags {
 
 class GzipDecompressor final : public Stream {
 public:
-    GzipDecompressor(NonnullOwnPtr<Stream>);
+    GzipDecompressor(MaybeOwned<Stream>);
     ~GzipDecompressor();
 
     virtual ErrorOr<Bytes> read_some(Bytes) override;