bzip2: move state pointer to the offset 0 (smaller code)

ifdef out DecompressEnd if FEATURE_CLEAN_UP is not seleted

fallbackSort                                        1655    1672     +17
mainSort                                            2447    2458     +11
bzip2_main                                           109     119     +10
.rodata                                           123466  123469      +3
generateMTFValues                                    433     435      +2
handle_compress                                      355     356      +1
BZ2_bzCompress                                        79      78      -1
prepare_new_block                                     55      48      -7
compressStream                                       547     503     -44
sendMTFValues                                       2225    2140     -85
------------------------------------------------------------------------------
(add/remove: 0/0 grow/shrink: 6/4 up/down: 44/-137)           Total: -93 bytes
   text    data     bss     dec     hex filename
 676421    2538   12104  691063   a8b77 busybox_old
 676328    2538   12104  690970   a8b1a busybox_unstripped

3 files changed, 7 insertions, 1 deletions

diff --git a/archival/bz/bzlib.c b/archival/bz/bzlib.c
index f27050a3c..cdb596cb1 100644
--- a/archival/bz/bzlib.c
+++ b/archival/bz/bzlib.c
@@ -363,6 +363,7 @@ case_BZ_M_FLUSHING:
 
 
 /*---------------------------------------------------*/
+#if ENABLE_FEATURE_CLEAN_UP
 static
 void BZ2_bzCompressEnd(bz_stream *strm)
 {
@@ -375,6 +376,7 @@ void BZ2_bzCompressEnd(bz_stream *strm)
         free(s->crc32table);
         free(strm->state);
 }
+#endif
 
 
 /*---------------------------------------------------*/
diff --git a/archival/bz/bzlib.h b/archival/bz/bzlib.h
index 602aab926..1bb811c4a 100644
--- a/archival/bz/bzlib.h
+++ b/archival/bz/bzlib.h
@@ -43,20 +43,22 @@ in the file LICENSE.
 #define BZ_CONFIG_ERROR      (-9)
 
 typedef struct bz_stream {
+        void *state;
         char *next_in;
         char *next_out;
         unsigned avail_in;
         unsigned avail_out;
         /*unsigned long long total_in;*/
         unsigned long long total_out;
-        void *state;
 } bz_stream;
 
 /*-- Core (low-level) library functions --*/
 
 static void BZ2_bzCompressInit(bz_stream *strm, int blockSize100k);
 static int BZ2_bzCompress(bz_stream *strm, int action);
+#if ENABLE_FEATURE_CLEAN_UP
 static void BZ2_bzCompressEnd(bz_stream *strm);
+#endif
 
 /*-------------------------------------------------------------*/
 /*--- end                                           bzlib.h ---*/
diff --git a/archival/bzip2.c b/archival/bzip2.c
index c750a056f..67df14416 100644
--- a/archival/bzip2.c
+++ b/archival/bzip2.c
@@ -116,7 +116,9 @@ USE_DESKTOP(long long) int bz_write_tail(bz_stream *strm, void *wbuf)
 
         total = 0 USE_DESKTOP( + strm->total_out );
  err:
+#if ENABLE_FEATURE_CLEAN_UP
         BZ2_bzCompressEnd(strm);
+#endif
         return total;
 }