Use a uniform approach for the largest value of an unsigned type.

2016-12-31 08:49:17 -08:00
parent f3fcb92cf6
commit b7fbee2156
3 changed files with 3 additions and 3 deletions
--- a/inflate.c
+++ b/inflate.c
@@ -1555,7 +1555,7 @@ unsigned long ZEXPORT inflateCodesUsed(strm)
 z_streamp strm;
 {
    struct inflate_state FAR *state;
-    if (inflateStateCheck(strm)) return (unsigned long)0 - 1;
+    if (inflateStateCheck(strm)) return (unsigned long)-1;
    state = (struct inflate_state FAR *)strm->state;
    return (unsigned long)(state->next - state->codes);
 }