Root js_object in TextEncoder::Encode

components/script/dom/textencoder.rs

@@ -74,12 +74,13 @@ impl TextEncoderMethods for TextEncoder {
         unsafe {
             let encoded = self.encoder.encode(&input.0, EncoderTrap::Strict).unwrap();
             let length = encoded.len() as u32;
-            let js_object: *mut JSObject = JS_NewUint8Array(cx, length);
+            rooted!(in(cx) let js_object = JS_NewUint8Array(cx, length));
+            assert!(!js_object.is_null());
             let mut is_shared = false;
-            let js_object_data: *mut uint8_t = JS_GetUint8ArrayData(js_object, &mut is_shared, ptr::null());
+            let js_object_data: *mut uint8_t = JS_GetUint8ArrayData(js_object.get(), &mut is_shared, ptr::null());
             assert!(!is_shared);
             ptr::copy_nonoverlapping(encoded.as_ptr(), js_object_data, length as usize);
-            js_object
+            js_object.get()
         }
     }
 }