diff -Naurp zlib-1.2.3/infback.c zlib-1.2.3.oden/infback.c
--- zlib-1.2.3/infback.c	2005-05-31 00:58:00.000000000 +0200
+++ zlib-1.2.3.oden/infback.c	2008-12-16 18:35:13.000000000 +0100
@@ -438,6 +438,9 @@ void FAR *out_desc;
             /* handle error breaks in while */
             if (state->mode == BAD) break;
 
+            if (state->mode == BAD)
+                break;
+
             /* build code tables */
             state->next = state->codes;
             state->lencode = (code const FAR *)(state->next);
diff -Naurp zlib-1.2.3/inflate.c zlib-1.2.3.oden/inflate.c
--- zlib-1.2.3/inflate.c	2005-06-14 23:50:12.000000000 +0200
+++ zlib-1.2.3.oden/inflate.c	2008-12-16 18:35:13.000000000 +0100
@@ -925,6 +925,9 @@ int flush;
             /* handle error breaks in while */
             if (state->mode == BAD) break;
 
+            if (state->mode == BAD)
+                break;
+
             /* build code tables */
             state->next = state->codes;
             state->lencode = (code const FAR *)(state->next);