Add crashtest

layout/generic/crashtests/322780-1.xul

@@ -0,0 +1,6 @@
+<?xml version="1.0"?>
+<window xmlns="http://www.mozilla.org/keymaster/gatekeeper/there.is.only.xul">
+  <label>
+    <foopy style="float:left;" />
+  </label>
+</window>

layout/generic/crashtests/crashtests.list

@@ -1,4 +1,5 @@
 load 307979-1.html
+load 322780-1.xul
 load 324318-1.html
 load 328946-1.html
 load 331284-1.xhtml