Fix autocomplete on commit and issue/MR edit pages

app/controllers/projects/commit_controller.rb

@@ -93,7 +93,7 @@ class Projects::CommitController < Projects::ApplicationController
   end
 
   def commit
-    @commit ||= @project.commit(params[:id])
+    @noteable = @commit ||= @project.commit(params[:id])
   end
 
   def pipelines

app/controllers/projects/issues_controller.rb

@@ -176,7 +176,8 @@ class Projects::IssuesController < Projects::ApplicationController
   protected
 
   def issue
-    @issue ||= begin
+    @noteable = @issue ||=
+      begin
         @project.issues.find_by!(iid: params[:id])
       rescue ActiveRecord::RecordNotFound
         redirect_old

app/controllers/projects/merge_requests_controller.rb

@@ -324,7 +324,7 @@ class Projects::MergeRequestsController < Projects::ApplicationController
   end
 
   def merge_request
-    @merge_request ||= @project.merge_requests.find_by!(iid: params[:id])
+    @issuable = @merge_request ||= @project.merge_requests.find_by!(iid: params[:id])
   end
   alias_method :subscribable_resource, :merge_request
   alias_method :issuable, :merge_request