Add patch to fix ENOENT error when cwd does not exists

(Closes: #969130)

Author: frikiluser

debian/patches/0010-Fix-getcwd-ENOENT.patch

@@ -0,0 +1,37 @@
+From: Antoni Villalonga <[email protected]>
+Date: Fri, 28 Aug 2020 02:09:42 +0200
+Subject: Rescue getcwd ENOENT error
+Forwarded: not-needed
+Bug-Debian: http://bugs.debian.org/969130
+Upstream-Author: David Rodríguez
+
+Rescue ENOENT error allowing run ruby scripts when cwd does not exists.
+Cherry-pick from upstream 96064e6f1ce100a37680dc8f9509f06b3350e9c8
+
+--- a/lib/rubygems/bundler_version_finder.rb
++++ b/lib/rubygems/bundler_version_finder.rb
+@@ -82,12 +82,19 @@
+   def self.lockfile_contents
+     gemfile = ENV["BUNDLE_GEMFILE"]
+     gemfile = nil if gemfile && gemfile.empty?
+-    Gem::Util.traverse_parents Dir.pwd do |directory|
+-      next unless gemfile = Gem::GEM_DEP_FILES.find { |f| File.file?(f.tap(&Gem::UNTAINT)) }
+ 
+-      gemfile = File.join directory, gemfile
+-      break
+-    end unless gemfile
++    unless gemfile
++      begin
++        Gem::Util.traverse_parents(Dir.pwd) do |directory|
++          next unless gemfile = Gem::GEM_DEP_FILES.find { |f| File.file?(f.tap(&Gem::UNTAINT)) }
++
++          gemfile = File.join directory, gemfile
++          break
++        end
++      rescue Errno::ENOENT
++        return
++      end
++    end
+ 
+     return unless gemfile
+ 

debian/patches/series

@@ -7,3 +7,4 @@
 0007-Fix-FTBFS-on-x32-misdetected-as-i386-or-amd64.patch
 0010-Fix-IRBTestIRBHistory-tests.patch
 0012-Dont-use-relative-path.patch
+0010-Fix-getcwd-ENOENT.patch