mtd: ftl: use swap() in copy_erase_unit()

---
 drivers/mtd/ftl.c | 8 ++------
 1 file changed, 2 insertions(+), 6 deletions(-)
 
diff --git a/drivers/mtd/ftl.c b/drivers/mtd/ftl.c
index dabf084..9fb3b0d 100644
--- a/drivers/mtd/ftl.c
+++ b/drivers/mtd/ftl.c
@@ -571,12 +571,8 @@ static int copy_erase_unit(partition_t *part, uint16_t srcunit,
 
 
     /* Update the maps and usage stats*/
-    i = xfer->EraseCount;
-    xfer->EraseCount = eun->EraseCount;
-    eun->EraseCount = i;
-    i = xfer->Offset;
-    xfer->Offset = eun->Offset;
-    eun->Offset = i;
+    swap(xfer->EraseCount, eun->EraseCount);
+    swap(xfer->Offset, eun->Offset);
     part->FreeTotal -= eun->Free;
     part->FreeTotal += free;
     eun->Free = free;