Use pixman_region32_clear instead of our own empty_region
This requires pixman 0.25.2
Reviewed-by: Jasper St. Pierre <jstpierre@mecheye.net>
diff --git a/configure.ac b/configure.ac
index 648bee8..1938078 100644
--- a/configure.ac
+++ b/configure.ac
@@ -59,7 +59,7 @@
AC_CHECK_FUNCS([mkostemp strchrnul initgroups posix_fallocate])
-COMPOSITOR_MODULES="wayland-server >= 1.3.90 pixman-1"
+COMPOSITOR_MODULES="wayland-server >= 1.3.90 pixman-1 >= 0.25.2"
AC_ARG_ENABLE(egl, [ --disable-egl],,
enable_egl=yes)