wxmac: --without-mediactrl on 64-bit machines.

Users of tools that fail when trying to link non-existent frameworks
run into problems on 64-bit macs, because the old 32-bit QuickTime
framework does not and never will exist as a 64 bit library.

This has been submitted upstream and accepted into wxmac HEAD, however
a released version is not yet available and won't be for quite some
time.

This patch lets us actually get code to compile without waiting 8
months for a release.

Closes Homebrew/homebrew#34543.
Closes Homebrew/homebrew#33366.

Signed-off-by: Mike McQuaid <mike@mikemcquaid.com>

Formula/wxmac.rb

@@ -52,7 +52,10 @@ class Wxmac < Formula
       "--enable-clipboard",
       "--enable-webkit",
       "--enable-svg",
-      "--enable-mediactrl",
+      # On 64-bit, enabling mediactrl leads to wxconfig trying to pull
+      # in a non-existent 64 bit QuickTime framework. This is submitted
+      # upstream and will eventually be fixed, but for now...
+      MacOS.prefer_64_bit? ? "--disable-mediactrl" : "--enable-mediactrl",
       "--enable-graphics_ctx",
       "--enable-controls",
       "--enable-dataviewctrl",