bzip2: more of code shrink

compressStream                                       503     473     -30
BZ2_bzCompress                                        78       -     -78
------------------------------------------------------------------------------
(add/remove: 0/1 grow/shrink: 0/1 up/down: 0/-108)           Total: -108 bytes
   text    data     bss     dec     hex filename
 676300    2538   12104  690942   a8afe busybox_old
 676192    2538   12104  690834   a8a92 busybox_unstripped

diff --git a/archival/bz/bzlib.c b/archival/bz/bzlib.c
index cdb596c..9957c2f 100644
--- a/archival/bz/bzlib.c
+++ b/archival/bz/bzlib.c
@@ -76,11 +76,9 @@
 
 
 static
-Bool isempty_RL(EState* s)
+int isempty_RL(EState* s)
 {
-	if (s->state_in_ch < 256 && s->state_in_len > 0)
-		return False;
-	return True;
+	return (s->state_in_ch >= 256 || s->state_in_len <= 0);
 }
 
 
@@ -333,7 +331,7 @@
 			}
 
 #ifdef FLUSH_IS_UNUSED
-case_BZ_M_FLUSHING:
+ case_BZ_M_FLUSHING:
 		case BZ_M_FLUSHING:
 			/*if (s->avail_in_expect != s->strm->avail_in)
 				return BZ_SEQUENCE_ERROR;*/