Fix JIRA issue parsing

lib/gitlab/reference_extractor.rb

@@ -25,7 +25,7 @@ module Gitlab
     def issues_for(project = nil)
       if project && project.jira_tracker?
         issues.uniq.map do |jira_identifier|
-          JiraIssue.new(jira_identifier)
+          JiraIssue.new(jira_identifier[:id])
         end
       else
         issues.map do |entry|

spec/lib/gitlab/reference_extractor_spec.rb

@@ -77,7 +77,7 @@ describe Gitlab::ReferenceExtractor do
     it 'returns JIRA issues for a JIRA-integrated project' do
       project.stub(jira_tracker?: true)
 
-      subject.analyze('JIRA-123 and FOOBAR-4567')
+      subject.analyze('JIRA-123 and FOOBAR-4567', project)
       subject.issues_for(project).should eq(
         [JiraIssue.new('JIRA-123'), JiraIssue.new('FOOBAR-4567')]
       )