Make masking more clear in mask_prefix.

2f9c99e8 · Juliusz Chroboczek · 8ee8d193 · 2f9c99e8
Commit 2f9c99e8 authored Oct 30, 2008 by Juliusz Chroboczek
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util.c util.c +2 -1

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--- a/util.c
+++ b/util.c
@@ -210,7 +210,8 @@ mask_prefix(unsigned char *restrict ret,
    memset(ret, 0, 16);
    memcpy(ret, prefix, plen / 8);
    if(plen % 8 != 0)
-        ret[plen / 8] = (prefix[plen / 8] & (0xFF << (8 - (plen % 8))));
+        ret[plen / 8] =
+            (prefix[plen / 8] & ((0xFF << (8 - (plen % 8))) & 0xFF));
    return ret;
 }