avm1: Returning from with{} should return from the parent activation

core/src/avm1/activation.rs

@@ -2241,9 +2241,12 @@ impl<'a, 'gc: 'a> Activation<'a, 'gc> {
         let object = self.avm.pop().coerce_to_object(self, context);
         let with_scope = Scope::new_with_scope(self.scope_cell(), object, context.gc_context);
         let mut new_activation = self.with_new_scope(with_scope);
-        let _ = new_activation.run_actions(context, code)?;
+        if let ReturnType::Explicit(value) = new_activation.run_actions(context, code)? {
+            Ok(FrameControl::Return(ReturnType::Explicit(value)))
+        } else {
             Ok(FrameControl::Continue)
         }
+    }
 
     /// Retrieve a given register value.
     ///

core/tests/regression_tests.rs

@@ -189,6 +189,7 @@ swf_tests! {
     (loadvariablesnum, "avm1/loadvariablesnum", 3),
     (loadvariables_method, "avm1/loadvariables_method", 3),
     (xml_load, "avm1/xml_load", 1),
+    (with_return, "avm1/with_return", 1),
     (cross_movie_root, "avm1/cross_movie_root", 5),
     (roots_and_levels, "avm1/roots_and_levels", 1),
     (swf6_case_insensitive, "avm1/swf6_case_insensitive", 1),

core/tests/swfs/avm1/with_return/output.txt

@@ -0,0 +1,2 @@
+// test()
+Success!