testing/firefox: upgrade to 57.0.4

testing/firefox/APKBUILD

 # Contributor: William Pitcock <nenolod@dereferenced.org>
 # Maintainer: Natanael Copa <ncopa@alpinelinux.org>
 pkgname=firefox
-pkgver=57.0.3
+pkgver=57.0.4
 _pkgver=$pkgver
 _xulver=$pkgver
-pkgrel=1
+pkgrel=0
 pkgdesc="Firefox web browser"
 url="http://www.firefox.com"
 # limited by rust and cargo
@@ -219,7 +219,7 @@ __EOF__
 	rm -f "$pkgdir"/${_mozappdirdev}/sdk/lib/libxul.so
 }
 
-sha512sums="1f887ab6bb16ef69bce56b689e761b3e09fc106b4bee7842be2c8e7eac05981f9922e9c3a8bd22b4935545cbbc10bf0a0c79df7800cd3c80fd4137070c9bfd09  firefox-57.0.3.source.tar.xz
+sha512sums="58846037aebbf14b85e6b3a46dbe617c780c6916e437ea4ee32a2502a6b55e3689921a0be28b920dedf2f966195df04ac8e45411caeb2601a168ec08b4827cf0  firefox-57.0.4.source.tar.xz
 0b3f1e4b9fdc868e4738b5c81fd6c6128ce8885b260affcb9a65ff9d164d7232626ce1291aaea70132b3e3124f5e13fef4d39326b8e7173e362a823722a85127  stab.h
 09bc32cf9ee81b9cc6bb58ddbc66e6cc5c344badff8de3435cde5848e5a451e0172153231db85c2385ff05b5d9c20760cb18e4138dfc99060a9e960de2befbd5  fix-fortify-inline.patch
 0fcc647af53a3ce21c2bc36e5631eb0935e7243ebb3ab59b5719542cc54a6ac023a4a857b43b75756efb9ed80c0aecaa94dc5679a3b3792f82e87bf2c1af82e1  disable-hunspell_hooks.patch