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util/nvmutil: tidy up rhex()

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Signed-off-by: Leah Rowe <leah@libreboot.org>
This commit is contained in:
Leah Rowe
2026-03-06 14:59:35 +00:00
parent a4b9a333a9
commit 99543bc632
1 changed files with 5 additions and 6 deletions
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util/nvmutil/nvmutil.c
+5 -6
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@@ -436,13 +436,12 @@ rhex(void)
static size_t n = 0;
if (!n) {
#ifdef HAVE_ARC4RANDOM
arc4random_buf(rnum, sizeof(rnum));
#else
read_file_PERFECTLY_or_die(rfd, rnum, sizeof(rnum),
0, rname, NULL);
#endif
n = sizeof(rnum);
#ifdef HAVE_ARC4RANDOM
arc4random_buf(rnum, n);
#else
read_file_PERFECTLY_or_die(rfd, rnum, n, 0, rname, NULL);
#endif
}
return rnum[--n] & 0xf;