harfbuzz: update to 2.6.4.

srcpkgs/harfbuzz/template

@@ -1,6 +1,6 @@
 # Template file for 'harfbuzz'
 pkgname=harfbuzz
-version=2.6.2
+version=2.6.4
 revision=1
 build_style=gnu-configure
 configure_args="--with-glib --with-freetype --with-cairo --with-icu --with-graphite2"
@@ -12,7 +12,7 @@ license="MIT"
 homepage="http://www.freedesktop.org/wiki/Software/HarfBuzz/"
 changelog="https://raw.githubusercontent.com/harfbuzz/harfbuzz/master/NEWS"
 distfiles="${FREEDESKTOP_SITE}/harfbuzz/release/${pkgname}-${version}.tar.xz"
-checksum=3b4c6a72f7f2b05d54f6c3112b3ebee5131c199fe4de4cf9bbbf71a56666f624
+checksum=9413b8d96132d699687ef914ebb8c50440efc87b3f775d25856d7ec347c03c12
 
 pre_configure() {
 	autoreconf -fi