mkfs_ext2: fix a buglet introduced in last commit

Signed-off-by: Denys Vlasenko <vda.linux@googlemail.com>

1 files changed, 7 insertions, 4 deletions

diff --git a/util-linux/mkfs_ext2.c b/util-linux/mkfs_ext2.c
index e4c3e171e..41f37c287 100644
--- a/util-linux/mkfs_ext2.c
+++ b/util-linux/mkfs_ext2.c
@@ -112,11 +112,14 @@ static uint32_t has_super(uint32_t x)
                 48828125, 129140163, 244140625, 282475249, 387420489,
                 1162261467, 1220703125, 1977326743, 3486784401/* >2^31 */,
         };
-        unsigned i;
-        for (i = ARRAY_SIZE(supers); --i >= 0;)
-                if (x == supers[i])
+        const uint32_t *sp = supers + ARRAY_SIZE(supers)-1;
+        while (1) {
+                if (x == *sp)
                         return 1;
-        return 0;
+                if (0 == *sp)
+                        return 0;
+                sp--;
+        }
 }
 #endif