Replace a suppression with operator() with a wildcard that TSan v1 understands

Unfortunately, TSan doesn't handle operator(), neither does the PRESUBMIT script.
We're going to deprecate v1 soon, so it doesn't worth fixing.

TBR=bruening@chromium.org
NOTRY=true

Review URL: https://codereview.chromium.org/320593002

git-svn-id: svn://svn.chromium.org/chrome/trunk/src@275448 0039d316-1c4b-4281-b951-d872f2087c98

tools/valgrind/tsan/suppressions.txt

@@ -1045,7 +1045,7 @@
   fun:scoped_refptr::operator=
   fun:base::MessageLoop::~MessageLoop
   fun:base::MessageLoop::~MessageLoop
-  fun:base::DefaultDeleter::operator()
+  fun:base::DefaultDeleter::operator*
   fun:base::internal::scoped_ptr_impl::~scoped_ptr_impl
   fun:scoped_ptr::~scoped_ptr
   fun:base::Thread::ThreadMain