adjust the coding style in src/ipc.c

git-svn-id: https://rt-thread.googlecode.com/svn/trunk@2302 bbd45198-f89e-11dd-88c7-29a3b14d5316

src/ipc.c

@@ -332,7 +332,7 @@ rt_err_t rt_sem_take(rt_sem_t sem, rt_int32_t time)
 	else
 	{
 		/* no waiting, return with timeout */
-		if (time == 0 )
+		if (time == 0)
 		{
 			rt_hw_interrupt_enable(temp);