LibCompress: Switch `DeflateDecompressor` to a fallible constructor

We don't have anything fallible in there yet, but we will soon switch
the seekback buffer to the new `CircularBuffer`, which has a fallible
constructor.

We have to do the same for the internal `GzipDecompressor::Member`
class, as it needs to construct a `DeflateCompressor` from its received
stream.

1 files changed, 3 insertions, 1 deletions

diff --git a/Userland/Libraries/LibCompress/Deflate.h b/Userland/Libraries/LibCompress/Deflate.h
index 22b60730df..5ed55123b8 100644
--- a/Userland/Libraries/LibCompress/Deflate.h
+++ b/Userland/Libraries/LibCompress/Deflate.h
@@ -76,7 +76,7 @@ public:
     friend CompressedBlock;
     friend UncompressedBlock;
 
-    DeflateDecompressor(Core::Stream::Handle<Core::Stream::Stream> stream);
+    static ErrorOr<NonnullOwnPtr<DeflateDecompressor>> construct(Core::Stream::Handle<Core::Stream::Stream> stream);
     ~DeflateDecompressor();
 
     virtual ErrorOr<Bytes> read(Bytes) override;
@@ -88,6 +88,8 @@ public:
     static ErrorOr<ByteBuffer> decompress_all(ReadonlyBytes);
 
 private:
+    DeflateDecompressor(Core::Stream::Handle<Core::Stream::Stream> stream);
+
     ErrorOr<u32> decode_length(u32);
     ErrorOr<u32> decode_distance(u32);
     ErrorOr<void> decode_codes(CanonicalCode& literal_code, Optional<CanonicalCode>& distance_code);