stylecontext: #include <math.h> when using math functions

diff --git a/gtk/gtkstylecontext.c b/gtk/gtkstylecontext.c
index d63d35bac45232f11be0934a2361d94b6feb4ce2..549fbaf411b42ab0d0cf9e0a83d363065a2e536c 100644 (file)
--- a/gtk/gtkstylecontext.c
+++ b/gtk/gtkstylecontext.c
@@ -20,6 +20,7 @@
 #include "config.h"
 
 #include <gdk/gdk.h>
+#include <math.h>
 #include <stdlib.h>
 #include <gobject/gvaluecollector.h>