Update Dr. Memory suppressions to make printing_unittests greener

They are green locally on my Windows 7 x64 machine with DrM r482
TBR=bruening
BUG=http://code.google.com/p/drmemory/issues/detail?id=569
Review URL: http://codereview.chromium.org/7745056

git-svn-id: svn://svn.chromium.org/chrome/trunk/src@98636 0039d316-1c4b-4281-b951-d872f2087c98

tools/valgrind/drmemory/suppressions.txt

@@ -87,7 +87,6 @@ LEAK
 SHELL32.dll!SHGetItemFromDataObject
 
 LEAK
-ole32.dll!*
 ...
 ole32.dll!*
 SHELL32.dll!SHChangeNotifySuspendResume
@@ -513,6 +512,16 @@ dbghelp.dll!*
 ...
 dbghelp.dll!StackWalk64
 
+# http://code.google.com/p/drmemory/issues/detail?id=569
+# symbols w/o PDB make no sense, so sticking with mod+offs
+POSSIBLE LEAK
+<RPCRT4.dll+0x10636>
+<RPCRT4.dll+0x10610>
+...
+<RPCRT4.dll+0x3474?>
+<ntdll.dll+0x64fde>
+<ntdll.dll+0x447f3>
+
 ############################
 # TODO(timurrrr): investigate these
 UNINITIALIZED READ