Coverity: Fix ProfileImportThread::OnImportStart dereferencing importer_ before null check.

chrome/profile_import/profile_import_thread.cc

Index: chrome/profile_import/profile_import_thread.cc
diff --git a/chrome/profile_import/profile_import_thread.cc b/chrome/profile_import/profile_import_thread.cc
index 4a7ca138d1d63843a0d036f8de599bea8982e774..4fa7cc3a49b025337882c25f37a8bf787e556bfd 100644
--- a/chrome/profile_import/profile_import_thread.cc
+++ b/chrome/profile_import/profile_import_thread.cc
@@ -49,16 +49,16 @@ void ProfileImportThread::OnImportStart(
 
   ImporterList importer_list;
   importer_ = importer_list.CreateImporterByType(profile_info.browser_type);
-  importer_->AddRef();  // Balanced in Cleanup().
-  importer_->set_import_to_bookmark_bar(import_to_bookmark_bar);
-  items_to_import_ = items;
-
   if (!importer_) {
     Send(new ProfileImportProcessHostMsg_Import_Finished(false,
         "Importer could not be created."));
     return;
   }
 
+  importer_->AddRef();  // Balanced in Cleanup().
+  importer_->set_import_to_bookmark_bar(import_to_bookmark_bar);
+  items_to_import_ = items;
+
   // Create worker thread in which importer runs.
   import_thread_.reset(new base::Thread("import_thread"));
   base::Thread::Options options;