mutter: fix -devel depends

srcpkgs/mutter/template

@@ -1,7 +1,7 @@
 # Template file for 'mutter'
 pkgname=mutter
 version=3.30.2
-revision=1
+revision=2
 build_style=gnu-configure
 configure_args="--disable-schemas-compile --disable-static --enable-egl-device
  --enable-remote-desktop"
@@ -28,7 +28,8 @@ fi
 
 mutter-devel_package() {
 	depends="gsettings-desktop-schemas>=3.16 gtk+3-devel>=3.16
-		clutter-devel>=1.22 libX11-devel mutter>=${version}_${revision}"
+		clutter-devel>=1.22 libX11-devel libXtst-devel
+		mutter>=${version}_${revision}"
 	short_desc+=" - development files"
 	pkg_install() {
 		vmove usr/include