Remove terminal editor from service on editor close

Fixes microsoft#127307

Author: Tyriar

src/vs/workbench/contrib/terminal/browser/terminalEditorService.ts

@@ -64,9 +64,9 @@ export class TerminalEditorService extends Disposable implements ITerminalEditor
 			}
 		}));
 		this._register(this.onDidDisposeInstance(instance => this.detachInstance(instance)));
-		this._register(this._editorService.onDidCloseEditor(editor => {
-			if (editor instanceof TerminalEditorInput && editor.terminalInstance) {
-				this.detachInstance(editor.terminalInstance);
+		this._register(this._editorService.onDidCloseEditor(e => {
+			if (e.editor instanceof TerminalEditorInput && e.editor.terminalInstance) {
+				this.detachInstance(e.editor.terminalInstance);
 			}
 		}));
 	}