Do not call the undeclared wait function.  Part of this upstream
commit:

commit d1bc2d6b932d6f09a34d391a7e1f56ff1d622e0e
Author: François Agrech <f.agrech@gmail.com>
Date:   Wed Nov 5 08:26:54 2014 +0100

    Use pango instead of cairo toy text api.

    This fixes a regression on previous fallback font patch.

diff --git a/src/controller.c b/src/controller.c
index a0754993fa0a42e9..686146f2e29f4fff 100644
--- a/src/controller.c
+++ b/src/controller.c
@@ -28,6 +28,7 @@
 #include <X11/Xlib.h>
 #include <X11/Xutil.h>
 #include <X11/extensions/shape.h>
+#include <sys/wait.h>
 
 #define MOVING_THRESHOLD 15
 
@@ -46,7 +47,7 @@ void controller_icon_expose (GtkWidget *window, cairo_t* context, void *userdata
 	cairo_paint(context);
 	cairo_set_operator(context, CAIRO_OPERATOR_SOURCE);
 	style_render_svg(context, handle, w, h, FALSE, NULL);
-	wait();
+	wait(NULL);
 	END_FUNC
 }