LibCompess: Add missing state update in DeflateDecompressor::read.

Author: https://github.com/asynts
Commit: https://github.com/SerenityOS/serenity/commit/c4799576ea4
Pull-request: https://github.com/SerenityOS/serenity/pull/3362
Reviewed-by: https://github.com/alimpfard

Libraries/LibCompress/Deflate.cpp

@@ -216,6 +216,8 @@ size_t DeflateDecompressor::read(Bytes bytes)
         if (block_type == 0b10) {
             CanonicalCode literal_codes, distance_codes;
             decode_codes(literal_codes, distance_codes);
+
+            m_state = State::ReadingCompressedBlock;
             new (&m_compressed_block) CompressedBlock(*this, literal_codes, distance_codes);
 
             return read(bytes);