[Blackfin][PATCH] code cleanup
diff --git a/cpu/bf533/interrupt.S b/cpu/bf533/interrupt.S
index a5de96b..524da8f 100644
--- a/cpu/bf533/interrupt.S
+++ b/cpu/bf533/interrupt.S
@@ -95,7 +95,7 @@
 	sp += 12;
 
 _evt_rst_exit:
-	rtn; 
+	rtn;
 
 irq_panic:
 	r0 = IRQ_EVX;
@@ -134,7 +134,7 @@
 
 evt_evt7_exit:
 	RESTORE_CONTEXT
-	rti; 
+	rti;
 
 .global _evt_evt8
 _evt_evt8: