tests: rename client_create to create_client_and_test_surface

A more descriptive name to not be confused with create_client().

v2: Rebased: fix also devices-test.c.

Signed-off-by: Pekka Paalanen <pekka.paalanen@collabora.co.uk>
Reviewed-by: Marek Chalupa <mchqwerty@gmail.com>
diff --git a/tests/bad-buffer-test.c b/tests/bad-buffer-test.c
index dc93b48..5175731 100644
--- a/tests/bad-buffer-test.c
+++ b/tests/bad-buffer-test.c
@@ -64,7 +64,7 @@
 	struct wl_surface *surface;
 	int frame;
 
-	client = client_create(46, 76, 111, 134);
+	client = create_client_and_test_surface(46, 76, 111, 134);
 	assert(client);
 	surface = client->surface->wl_surface;