Couple of prospective fix for memory test flakiness: addref/release the url request context getter appropriately; fix a leak.

Passing as a straight pointer without addreffing was copied from the previous spellchecker impl. Using .release() instead of = NULL was a plain old mistake.

BUG=none
TEST=memory test flakiness goes away hopefully?

Review URL: http://codereview.chromium.org/379015

git-svn-id: svn://svn.chromium.org/chrome/trunk/src@31529 0039d316-1c4b-4281-b951-d872f2087c98
diff --git a/chrome/browser/profile.cc b/chrome/browser/profile.cc
index 9f62d39..112375a 100644
--- a/chrome/browser/profile.cc
+++ b/chrome/browser/profile.cc
@@ -1321,7 +1321,7 @@
   bool notify = false;
   if (spellcheck_host_.get()) {
     spellcheck_host_->UnsetObserver();
-    spellcheck_host_.release();
+    spellcheck_host_ = NULL;
     spellcheck_host_ready_ = false;
     notify = true;
   }