demos: Fix build

Include gtk/fallback-c89.c so that we can ensure that we have round(), and
that file already includes math.h

diff --git a/demos/gtk-demo/gtkfishbowl.c b/demos/gtk-demo/gtkfishbowl.c
index 54ee7b057c1b7695c472d32dca03292e266b2d35..4f2a2d571f9c6312bf329e9e436075a9fdbbfc7a 100644 (file)
--- a/demos/gtk-demo/gtkfishbowl.c
+++ b/demos/gtk-demo/gtkfishbowl.c
@@ -19,7 +19,7 @@
 
 #include "gtkfishbowl.h"
 
-#include <math.h>
+#include "gtk/fallback-c89.c"
 
 typedef struct _GtkFishbowlPrivate       GtkFishbowlPrivate;
 typedef struct _GtkFishbowlChild         GtkFishbowlChild;