cyclades.c: fix sparse shadowed variable warnings

Nested min() macros.
drivers/char/cyclades.c:2750:7: warning: symbol '_x' shadows an earlier one
drivers/char/cyclades.c:2750:7: originally declared here
drivers/char/cyclades.c:2750:7: warning: symbol '_x' shadows an earlier one
drivers/char/cyclades.c:2750:7: originally declared here
drivers/char/cyclades.c:2750:7: warning: symbol '_y' shadows an earlier one
drivers/char/cyclades.c:2750:7: originally declared here

Signed-off-by: Harvey Harrison <harvey.harrison@gmail.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
diff --git a/drivers/char/cyclades.c b/drivers/char/cyclades.c
index 23312f2..028db1b 100644
--- a/drivers/char/cyclades.c
+++ b/drivers/char/cyclades.c
@@ -2747,8 +2747,8 @@
 
 	spin_lock_irqsave(&info->card->card_lock, flags);
 	while (1) {
-		c = min(count, min((int)(SERIAL_XMIT_SIZE - info->xmit_cnt - 1),
-				   (int)(SERIAL_XMIT_SIZE - info->xmit_head)));
+		c = min(count, (int)(SERIAL_XMIT_SIZE - info->xmit_cnt - 1));
+		c = min(c, (int)(SERIAL_XMIT_SIZE - info->xmit_head));
 
 		if (c <= 0)
 			break;