[label] add prototype for exported function

diff --git a/src/plugins/controls/label/plugin.c b/src/plugins/controls/label/plugin.c
index 958768ffc261d9e372ac628efe5a54111d636ba2..7babb9e05fa203e847cc323f0d39bcbfa50ff471 100644 (file)
--- a/src/plugins/controls/label/plugin.c
+++ b/src/plugins/controls/label/plugin.c
@@ -64,6 +64,8 @@ struct _ply_label_plugin_control
   uint32_t is_hidden : 1;
 };
 
+ply_label_plugin_interface_t * ply_label_plugin_get_interface (void);
+
 static ply_label_plugin_control_t *
 create_control (void)
 {