Suppress DrMemory leak reports under _getptd

BUG=http://code.google.com/p/drmemory/issues/detail?id=275
TBR=glider
TEST=DrM/FYI should go greener
Review URL: http://codereview.chromium.org/6303015

git-svn-id: svn://svn.chromium.org/chrome/trunk/src@72126 0039d316-1c4b-4281-b951-d872f2087c98

tools/valgrind/drmemory/suppressions.txt

@@ -272,6 +272,11 @@ LEAK
 ...
 GDI32.dll!CreateDCW
 
+# http://code.google.com/p/drmemory/issues/detail?id=274
+LEAK
+*!_getptd_noexit
+*!_getptd
+
 ############################
 # TODO(timurrrr): investigate these
 UNINITIALIZED READ