Set X-Opensuse-Errorcode for pundit errors

[hennevogel]

As we do in ApplicationController#render_error

[hennevogel]

open-build-service/src/api/app/controllers/application_controller.rb

Lines 161 to 175 in 599e101

	def render_error(opt = {})
	# avoid double render error
	self.response_body = nil
	gather_exception_defaults(opt)
	response.headers['X-Opensuse-Errorcode'] = @errorcode
	respond_to do |format|
	format.xml { render template: 'status', status: @status }
	format.json { render json: { errorcode: @errorcode, summary: @summary }, status: @status }
	format.html do
	flash[:error] = "#{@summary} (#{@errorcode})" unless request.env['HTTP_REFERER']
	redirect_back(fallback_location: root_path)
	end
	end
	end