[Mac] Fix a leak in HyperlinkButtonCell

tools/valgrind/memcheck/suppressions_mac.txt

Index: tools/valgrind/memcheck/suppressions_mac.txt
diff --git a/tools/valgrind/memcheck/suppressions_mac.txt b/tools/valgrind/memcheck/suppressions_mac.txt
index 71afffddc5f1ea274feb58c94694b79e9108162a..190fef96822932f622c84ad824d8bc668b3e683a 100644
--- a/tools/valgrind/memcheck/suppressions_mac.txt
+++ b/tools/valgrind/memcheck/suppressions_mac.txt
@@ -375,29 +375,3 @@
    fun:_Z16DispatchToMethodIN7history14HistoryBackendEMS1_FvbEbEvPT_T0_RK6Tuple1IT1_E
    fun:_ZN14RunnableMethodIN7history14HistoryBackendEMS1_FvbE6Tuple1IbEE3RunEv
 }
-{
-   bug_27149
-   Memcheck:Leak
-   fun:malloc_zone_calloc
-   fun:_internal_class_createInstanceFromZone
-   fun:+[NSObject allocWithZone:]
-   fun:-[NSParagraphStyle mutableCopyWithZone:]
-   fun:-[NSObject mutableCopy]
-   fun:-[HyperlinkButtonCell linkAttributes]
-   fun:-[HyperlinkButtonCell drawTitle:withFrame:inView:]
-   fun:-[NSButtonCell _configureAndDrawTitleWithRect:cellFrame:controlView:]
-   fun:-[NSButtonCell drawInteriorWithFrame:inView:]
-   fun:-[NSControl drawRect:]
-   fun:-[NSView _drawRect:clip:]
-   fun:-[NSView _recursiveDisplayAllDirtyWithLockFocus:visRect:]
-   fun:-[NSView _recursiveDisplayAllDirtyWithLockFocus:visRect:]
-   fun:-[NSView _recursiveDisplayAllDirtyWithLockFocus:visRect:]
-   fun:-[NSView _recursiveDisplayRectIfNeededIgnoringOpacity:isVisibleRect:rectIsVisibleRectForView:topView:]
-   fun:-[NSView _recursiveDisplayRectIfNeededIgnoringOpacity:isVisibleRect:rectIsVisibleRectForView:topView:]
-   fun:-[NSView _recursiveDisplayRectIfNeededIgnoringOpacity:isVisibleRect:rectIsVisibleRectForView:topView:]
-   fun:-[NSThemeFrame _recursiveDisplayRectIfNeededIgnoringOpacity:isVisibleRect:rectIsVisibleRectForView:topView:]
-   fun:-[NSView _displayRectIgnoringOpacity:isVisibleRect:rectIsVisibleRectForView:]
-   fun:-[NSView displayIfNeeded]
-   fun:-[NSWindow displayIfNeeded]
-   fun:_handleWindowNeedsDisplay
-}