Don't overwrite ENV if it's set

egypt · egypt · commit 594923c790ef · 2014-06-18T14:53:41.000-05:00
diff --git a/lib/msfenv.rb b/lib/msfenv.rb
@@ -17,7 +17,7 @@
     extension_pathname = root.join("Gemfile#{extension}")
 
     if extension_pathname.readable?
-      ENV['BUNDLE_GEMFILE'] = extension_pathname.to_path
+      ENV['BUNDLE_GEMFILE'] ||= extension_pathname.to_path
       break
     end
   end
