Adjust error message

Author: Aaron1011

core/src/loader.rs

@@ -773,17 +773,19 @@ impl<'gc> Loader<'gc> {
                             );
                         }
                     }
-                    Err(err) => {
+                    Err(_err) => {
                         // Testing with Flash shoes that the 'data' property is cleared
                         // when an error occurs
 
                         set_data(Vec::new(), &mut activation, target, data_format);
+
+                        // FIXME - Match the exact error message generated by Flash
                         let mut io_error_evt = Avm2Event::new(
                             "ioError",
                             Avm2EventData::IOError {
                                 text: AvmString::new_utf8(
                                     activation.context.gc_context,
-                                    format!("Ruffle: Failed to fetch url '{:?}' : {:?}", url, err),
+                                    "Error #2032: Stream Error",
                                 ),
                             },
                         );

tests/tests/swfs/avm2/url_loader/output.txt

@@ -15,5 +15,5 @@ Loaded binary with length: 4
 2
 3
 IOErrorEvent.IO_ERROR: [object URLLoader]
-IOErrorEvent text: Ruffle: Failed to fetch url '"missingFile.bin"' : FetchError("No such file or directory (os error 2)")
+IOErrorEvent text: Error #2032: Stream Error
 Old data: