mosh: patch to fix mojave build

Closes #43037.

Signed-off-by: Steven Peters <scpeters@openrobotics.org>

Formula/mosh.rb

@@ -3,7 +3,7 @@ class Mosh < Formula
   homepage "https://mosh.org"
   url "https://mosh.org/mosh-1.3.2.tar.gz"
   sha256 "da600573dfa827d88ce114e0fed30210689381bbdcff543c931e4d6a2e851216"
-  revision 5
+  revision 6
 
   bottle do
     cellar :any
@@ -23,6 +23,12 @@ class Mosh < Formula
   depends_on "tmux" => :build
   depends_on "protobuf"
 
+  # Fix mojave build.
+  patch do
+    url "https://github.com/mobile-shell/mosh/commit/e5f8a826ef9ff5da4cfce3bb8151f9526ec19db0.patch?full_index=1"
+    sha256 "022bf82de1179b2ceb7dc6ae7b922961dfacd52fbccc30472c527cb7c87c96f0"
+  end
+
   def install
     ENV.cxx11