compositor: remove the weston_config field in weston_compositor

The config can now be retrieved with a new function defined in weston.h,
wet_get_config(weston_compositor*).

Signed-off-by: Giulio Camuffo <giuliocamuffo@gmail.com>
Reviewed-by: Pekka Paalanen <pekka.paalanen@collabora.co.uk>
Reviewed-by: Quentin Glidic <sardemff7+git@sardemff7.net>
diff --git a/src/cms-static.c b/src/cms-static.c
index 0273ee3..a6bbfd4 100644
--- a/src/cms-static.c
+++ b/src/cms-static.c
@@ -31,6 +31,7 @@
 #include "compositor.h"
 #include "cms-helper.h"
 #include "shared/helpers.h"
+#include "weston.h"
 
 struct cms_static {
 	struct weston_compositor	*ec;
@@ -49,7 +50,7 @@
 
 	if (o->name == NULL)
 		return;
-	s = weston_config_get_section(cms->ec->config,
+	s = weston_config_get_section(wet_get_config(cms->ec),
 				      "output", "name", o->name);
 	if (s == NULL)
 		return;