Add testcase for bug 427325 as a crashtest

content/svg/content/src/crashtests/427325-1.svg

@@ -0,0 +1,11 @@
+<svg xmlns="http://www.w3.org/2000/svg">
+
+  <filter id="f">
+    <feGaussianBlur stdDeviation="0.1"/>
+  </filter>
+
+  <g filter="url(#f)">
+    <rect width="100" height="100" fill="lime"/>
+  </g>
+
+</svg>

content/svg/content/src/crashtests/crashtests.list

@@ -36,5 +36,6 @@ load 410659-3.svg
 load 412104-1.svg
 load 413174-1.svg
 load 414188-1.svg
+load 427325-1.svg
 load 428228-1.svg
 load 428841-1.svg