From 04aacc8b3fdb1d6ba3a044ac20b173b615d2c60f Mon Sep 17 00:00:00 2001
From: David du Colombier <0intro@gmail.com>
Date: Fri, 11 Aug 2000 00:00:00 +0000
Subject: [PATCH] Plan 9 from Bell Labs 2000-08-11

---
 mpc/unsac.c | 6 ++++--
 1 file changed, 4 insertions(+), 2 deletions(-)

diff --git a/mpc/unsac.c b/mpc/unsac.c
index a8d2a2b0a2c775005bf0e0447eba332045823c72..f918792eef7b6c1333d51bc59299900b45b14916 100644
--- a/mpc/unsac.c
+++ b/mpc/unsac.c
@@ -448,11 +448,13 @@ hufftab(Decode *dec, Huff *h, char *hb, ulong *bitcount, int maxleaf, int maxbit
 	 */
 	for(b = maxbits; b > flatbits; b--){
 		code = h->maxcode[b];
+		if(code == -1)
+			break;
 		mincode = code + 1 - bitcount[b];
 		mincode >>= b - flatbits;
 		code >>= b - flatbits;
-		for(; code >= mincode; code--)
-			h->flat[code] = (b << 8) | 0xff;
+		for(; mincode <= code; mincode++)
+			h->flat[mincode] = (b << 8) | 0xff;
 	}
 
 	for(i = 0; i < maxleaf; i++){