FS#50886 optdep

PKGBUILD

@@ -15,7 +15,8 @@ makedepends=(unzip zip diffutils python2 yasm mesa imake gconf libpulse inetutil
              autoconf2.13 cargo)
 optdepends=('networkmanager: Location detection via available WiFi networks'
             'libnotify: Notification integration'
-            'upower: Battery API')
+            'upower: Battery API'
+            'speech-dispatcher: Text-to-Speech')
 options=(!emptydirs !makeflags)
 source=(https://ftp.mozilla.org/pub/mozilla.org/firefox/releases/$pkgver/source/firefox-$pkgver.source.tar.xz
         firefox.desktop firefox-symbolic.svg