remove trailing whitespaces

Remove trailing whitespaces because they are not needed and jumping to
the end of al ine should do just that and not jump to the whitespace.
diff --git a/clients/nested.c b/clients/nested.c
index f094237..0b18dd5 100644
--- a/clients/nested.c
+++ b/clients/nested.c
@@ -615,7 +615,7 @@
 {
 	struct nested *nested = wl_resource_get_user_data(resource);
 	struct nested_surface *surface;
-	
+
 	surface = zalloc(sizeof *surface);
 	if (surface == NULL) {
 		wl_resource_post_no_memory(resource);