Add another testcase for #910

Author: jruderman

src/test/run-fail/unwind-resource-fail3.rs

@@ -0,0 +1,11 @@
+// error-pattern:quux
+// xfail-test
+
+resource faily_box(_i: @int) {
+    // What happens to the box pointer owned by this resource?
+    fail "quux";
+}
+
+fn main() {
+    faily_box(@10);
+}