gdkdisplay.c: Include stdlib.h

It is needed for qsort().

diff --git a/gdk/gdkdisplay.c b/gdk/gdkdisplay.c
index 7d36f2e371383a4d340195e150cb2c4fd130487d..075342a26bc969dc0b3424de9456543b86723812 100644 (file)
--- a/gdk/gdkdisplay.c
+++ b/gdk/gdkdisplay.c
@@ -40,6 +40,7 @@
 #include <epoxy/egl.h>
 #endif
 #include <math.h>
+#include <stdlib.h>
 
 /**
  * GdkDisplay: