weston: Properly namespace modules entrypoint

Signed-off-by: Quentin Glidic <sardemff7+git@sardemff7.net>
Reviewed-by: Daniel Stone <daniels@collabora.com>
diff --git a/tests/plugin-registry-test.c b/tests/plugin-registry-test.c
index 2a32e01..81e26cd 100644
--- a/tests/plugin-registry-test.c
+++ b/tests/plugin-registry-test.c
@@ -89,7 +89,8 @@
 }
 
 WL_EXPORT int
-module_init(struct weston_compositor *compositor, int *argc, char *argv[])
+wet_module_init(struct weston_compositor *compositor,
+		int *argc, char *argv[])
 {
 	struct wl_event_loop *loop;