Fixes microsoft/monaco-editor#2612

Author: alexdima

src/vs/editor/contrib/hover/markerHoverParticipant.ts

@@ -231,7 +231,7 @@ export class MarkerHoverParticipant implements IEditorHoverParticipant<MarkerHov
 						});
 					}
 				});
-			});
+			}, onUnexpectedError);
 		}
 	}