mplayer: work around for 1/4 window bug on Intel macOS

Formula/m/mplayer.rb

@@ -43,6 +43,16 @@ class Mplayer < Formula
  uses_from_macos "libxml2"
 
  def install
+ # Work around build failure with newer Clang
+ if DevelopmentTools.clang_build_version >= 1500
+ ENV.append_to_cflags "-Wno-int-conversion -Wno-incompatible-function-pointer-types"
+ end
+
+ # Fix x86_64 detection used to apply a workaround.
+ # TODO: Remove on the next release as code was removed.
+ # Issue ref: https://trac.mplayerhq.hu/ticket/2383
+ inreplace "libvo/osx_objc_common.m", " defined(x86_64)", " defined(__x86_64__)" if build.stable?
+
  # we disable cdparanoia because homebrew's version is hacked to work on macOS
  # and mplayer doesn't expect the hacks we apply. So it chokes. Only relevant
  # if you have cdparanoia installed.