[Spellcheck, OSX] Fix crash

chrome/browser/spellchecker/spelling_service_client.cc

Index: chrome/browser/spellchecker/spelling_service_client.cc
diff --git a/chrome/browser/spellchecker/spelling_service_client.cc b/chrome/browser/spellchecker/spelling_service_client.cc
index 8ef8bcf738ddc350324f9c56deb8aa6677d1c55d..a0506ba052f848dc40e5f30e9cc8e8e10954bf22 100644
--- a/chrome/browser/spellchecker/spelling_service_client.cc
+++ b/chrome/browser/spellchecker/spelling_service_client.cc
@@ -254,8 +254,11 @@ void SpellingServiceClient::OnURLFetchComplete(
     fetcher->GetResponseAsString(&data);
     success = ParseResponse(data, &results);
   }
-  callback_data->callback.Run(success, callback_data->text, results);
   spellcheck_fetchers_.erase(fetcher.get());
+
+  // The callback may release the last (transitive) dependency on |this|. It
+  // MUST be the last function called.
+  callback_data->callback.Run(success, callback_data->text, results);
 }
 
 net::URLFetcher* SpellingServiceClient::CreateURLFetcher(const GURL& url) {