Auto merge of #4195 - RochesterinNYC:add-net-http-errors-safely, r=segiddins

Add `Net#HTTP--` errors safely (only if in version of ruby stdlib)

Continuation of #4154. Some errors in the ruby `Net` module that we might not want to retry on were added in later Ruby versions of the stdlib. This PR allows us to preserve backwards compatibility while adding new  errors.

1 files changed, 7 insertions, 0 deletions

diff --git a/lib/bundler/shared_helpers.rb b/lib/bundler/shared_helpers.rb
index 7ca55a9ee0..d0c3f430aa 100644
--- a/lib/bundler/shared_helpers.rb
+++ b/lib/bundler/shared_helpers.rb
@@ -120,6 +120,13 @@ module Bundler
       raise TemporaryResourceError.new(path, action)
     end
 
+    def const_get_safely(constant_name, namespace)
+      const_in_namespace = namespace.constants.include?(constant_name.to_s) ||
+        namespace.constants.include?(constant_name.to_sym)
+      return nil unless const_in_namespace
+      namespace.const_get(constant_name)
+    end
+
   private
 
     def find_gemfile