Bug 610945 - Make reftests/svg/filters/feSpecularLighting-1.svg pass on all platforms r=roc a=tests

layout/reftests/svg/filters/feSpecularLighting-1.svg

@@ -17,4 +17,9 @@
   </filter>
   <rect width='100' height='100' fill='blue'/>
   <path d='M0,0 h100 v100 h-100 z M20,20 v60 h60 v-60 z' filter='url(#f)'/>
+
+  <!-- Cover two spots in the test whose rendering differs in opt builds
+       vs. debug builds (see Bug 610945). -->
+  <rect x='78' y='18' width='4' height='4'/>
+  <rect x='18' y='78' width='4' height='4'/>
 </svg>

layout/reftests/svg/filters/reftest.list

@@ -86,5 +86,5 @@ fails == filter-marked-line-01.svg pass.svg # bug 477704
 
 == feDiffuseLighting-1.svg feDiffuseLighting-1-ref.svg
 
-random-if(gtk2Widget) == feSpecularLighting-1.svg feSpecularLighting-1-ref.svg # bug 610945
+== feSpecularLighting-1.svg feSpecularLighting-1-ref.svg