Protected branches user list never updated. Mass-assign warning.

[wilsoc5]

I just upgraded from 1.0.4 to the 1.2.0 and tested this, then updated to devel and tested. Both have the same problem:

If I create a new protected branch and select members, no members show up in the list at the bottom of the page.

If I check the database, the principal_id column in the protected_branches_members table is NULL for all entries.

If I manually change a principal_id in the database, I can get the name to show up. Same with multiple entries in the protected_branches_members table referring to the same protected branch.
If I uncheck a user in the edit box for that protected branch, that user is deleted appropriately.
Trying to add them back does not work, it simply creates a new entry in the protected_branches_members table with NULL set for the principal_id field.

I also get a warning:

WARNING: Can't mass-assign protected attributes for ProtectedBranchesMember: principal_id, inherited_by

That led me to adding

attr_accessible :principal_id, :inherited_by

to REDMINE_ROOT/plugins/redmine_git_hosting/app/models/protected_branches_member.rb

and suddenly adding users works.

Environment:
  Redmine version                3.0.1.stable
  Ruby version                   1.9.3-p484 (2013-11-22) [x86_64-linux]
  Rails version                  4.2.0
  Environment                    production
  Database adapter               PostgreSQL
SCM:
  Git                            1.9.1
  Filesystem                     
  Xitolite                       1.9.1
Redmine plugins:
  projects_table                 0.0.4
  redmine_banner                 0.1.1
  redmine_bootstrap_kit          0.2.4
  redmine_ckeditor               1.1.0
  redmine_git_hosting            1.2-devel
  redmine_per_project_formatting 0.0.4
  redmine_wiki_extensions        0.7.0
  userproj                       0.0.1
  wiki_latex                     0.1.0

[n-rodriguez]

Thanks!