Fix rubucop offenses

lib/gitlab/bitbucket_import/importer.rb

@@ -60,8 +60,6 @@ module Gitlab
 
         create_labels
 
-        gitlab_issue = nil
-
         client.issues(repo).each do |issue|
           begin
             description = ''
@@ -87,7 +85,11 @@ module Gitlab
 
           gitlab_issue.labels << @labels[label_name]
 
-          if gitlab_issue.persisted?
+          import_issue_comments(issue, gitlab_issue) if gitlab_issue.persisted?
+        end
+      end
+
+      def import_issue_comments(issue, gitlab_issue)
         client.issue_comments(repo, issue.iid).each do |comment|
           # The note can be blank for issue service messages like "Changed title: ..."
           # We would like to import those comments as well but there is no any
@@ -113,8 +115,6 @@ module Gitlab
           end
         end
       end
-        end
-      end
 
       def create_labels
         LABELS.each do |label|

spec/lib/bitbucket/representation/issue_spec.rb

@@ -14,7 +14,6 @@ describe Bitbucket::Representation::Issue do
     it { expect(described_class.new({}).milestone).to be_nil }
   end
 
-
   describe '#author' do
     it { expect(described_class.new({ 'reporter' => { 'username' => 'Ben' } }).author).to eq('Ben') }
     it { expect(described_class.new({}).author).to be_nil }