Bug 1224251 followup - Annotate one of the new reftests as fuzzy on Windows and Mac.

--HG--
extra : commitid : 1BCD8In3iqa

layout/reftests/table-background/reftest.list

@@ -58,5 +58,5 @@ skip-if(B2G||Mulet) == border-separate-opacity-table.html border-separate-opacit
 == scrollable-rowgroup-separate-border.html scrollable-rowgroup-separate-notref.html # scrolling rowgroups were removed in bug 28800
 == empty-cells-default-1.html empty-cells-default-1-ref.html
 == empty-cells-default-2.html empty-cells-default-2-ref.html
-== table-row-opacity-dynamic-1.html table-row-opacity-dynamic-1-ref.html
+fuzzy-if(OSX,1,113) fuzzy-if(winWidget,1,12) == table-row-opacity-dynamic-1.html table-row-opacity-dynamic-1-ref.html
 == table-row-opacity-dynamic-2.html table-row-opacity-dynamic-2-ref.html