Adding upstream version 1.7.upstream/1.7

Signed-off-by: Daniel Baumann <mail@daniel-baumann.ch>

1 files changed, 6 insertions, 9 deletions

diff --git a/decoder.cc b/decoder.cc
index 0cb6188..6c0c775 100644
--- a/decoder.cc
+++ b/decoder.cc
@@ -125,12 +125,11 @@ bool LZ_decoder::verify_trailer( const Pretty_print & pp ) const
     //               3 = trailer error, 4 = unknown marker found.
 int LZ_decoder::decode_member( const Pretty_print & pp )
   {
-  unsigned int rep0 = 0;
-  unsigned int rep1 = 0;
-  unsigned int rep2 = 0;
+  unsigned int rep0 = 0;	// rep[0-3] latest four distances
+  unsigned int rep1 = 0;	// used for efficient coding of
+  unsigned int rep2 = 0;	// repeated distances
   unsigned int rep3 = 0;
   State state;
-  uint8_t prev_byte = 0;
 
   while( true )
     {
@@ -139,11 +138,10 @@ int LZ_decoder::decode_member( const Pretty_print & pp )
     if( range_decoder.decode_bit( bm_match[state()][pos_state] ) == 0 )
       {
       if( state.is_char() )
-        prev_byte = literal_decoder.decode( range_decoder, prev_byte );
+        put_byte( literal_decoder.decode( range_decoder, get_byte( 0 ) ) );
       else
-        prev_byte = literal_decoder.decode_matched( range_decoder, prev_byte,
-                                                    get_byte( rep0 ) );
-      put_byte( prev_byte );
+        put_byte( literal_decoder.decode_matched( range_decoder, get_byte( 0 ),
+                                                  get_byte( rep0 ) ) );
       state.set_char();
       }
     else
@@ -222,7 +220,6 @@ int LZ_decoder::decode_member( const Pretty_print & pp )
         state.set_match();
         }
       copy_block( rep0, len );
-      prev_byte = get_byte( 0 );
       }
     }
   }