[PATCH] [sharutils] Fix swapping on big-endian machines

[Petr Písař]

4.13.1 release replaced SWAP() macro with function. However there were
two bugs. First the function always retuned 0 because it ignored
input argument. Second it indexed input array off-by-one. As
result, shar-1 test failed on S390 or PPC.

This patch fixes it.
---
 lib/md5.c | 9 +++++----
 1 file changed, 5 insertions(+), 4 deletions(-)

diff --git a/lib/md5.c b/lib/md5.c
index 076f6ef..6dea827 100644
--- a/lib/md5.c
+++ b/lib/md5.c
@@ -54,10 +54,11 @@ SWAP(md5_uint32 n)
     md5_uint32    uiv;
   } v, res;
 
-  res.cv[0] = v.cv[sizeof(md5_uint32) - 0];
-  res.cv[1] = v.cv[sizeof(md5_uint32) - 1];
-  res.cv[2] = v.cv[sizeof(md5_uint32) - 2];
-  res.cv[3] = v.cv[sizeof(md5_uint32) - 3];
+  v.uiv = n;
+  res.cv[0] = v.cv[sizeof(md5_uint32) - 1];
+  res.cv[1] = v.cv[sizeof(md5_uint32) - 2];
+  res.cv[2] = v.cv[sizeof(md5_uint32) - 3];
+  res.cv[3] = v.cv[sizeof(md5_uint32) - 4];
   return res.uiv;
 }
 
-- 
1.7.11.7