stdio: Correct code style nits

Fix a few code style nits in stdio_get_by_name().

Signed-off-by: Simon Glass <sjg@chromium.org>
diff --git a/common/stdio.c b/common/stdio.c
index 8e4a9be..a7d016b 100644
--- a/common/stdio.c
+++ b/common/stdio.c
@@ -173,12 +173,12 @@
 }
 #endif
 
-struct stdio_dev* stdio_get_by_name(const char *name)
+struct stdio_dev *stdio_get_by_name(const char *name)
 {
 	struct list_head *pos;
 	struct stdio_dev *sdev;
 
-	if(!name)
+	if (!name)
 		return NULL;
 
 	list_for_each(pos, &(devs.list)) {