Pass mangle options to figure_out_scope before mangling in tests

test/mocha/screw-ie8.js

@@ -0,0 +1,23 @@
+var assert = require("assert");
+var uglify = require("../../");
+
+describe("screw-ie8", function () {
+    it("Should be able to minify() with undefined as catch parameter in a try...catch statement", function () {
+        assert.strictEqual(
+            uglify.minify(
+                "function a(b){\
+                    try {\
+                        throw 'Stuff';\
+                    } catch (undefined) {\
+                        console.log('caught: ' + undefined);\
+                    }\
+                    console.log('undefined is ' + undefined);\
+                    return b === undefined;\
+                };", {
+                    fromString: true
+                }
+            ).code,
+            'function a(o){try{throw"Stuff"}catch(o){console.log("caught: "+o)}return console.log("undefined is "+void 0),void 0===o}'
+        );
+    });
+});