[PATCH] libext2fs: fix dict_uint_cmp()

[Niu Yawei <yawei.niu@gmail.com>]

dict_uint_cmp() returns an usigned int value in int type, which
could mess the dict key comparison when the difference of two
keys is greater than INT_MAX.

Signed-off-by: Niu Yawei <yawei.niu@intel.com>
---
 lib/quota/mkquota.c |    7 ++++++-
 1 files changed, 6 insertions(+), 1 deletions(-)

diff --git a/lib/quota/mkquota.c b/lib/quota/mkquota.c
index 9883216..ba8c2da 100644
--- a/lib/quota/mkquota.c
+++ b/lib/quota/mkquota.c
@@ -207,7 +207,12 @@ static int dict_uint_cmp(const void *a, const void *b)
 	c = VOIDPTR_TO_UINT(a);
 	d = VOIDPTR_TO_UINT(b);

-	return c - d;
+	if (c == d)
+		return 0;
+	else if (c > d)
+		return 1;
+	else
+		return -1;
 }

 static inline qid_t get_qid(struct ext2_inode *inode, int qtype)
-- 
1.7.1