workaround #9039 test failure

tests/server/src/cases/display/issues/Issue9039.hx

@@ -5,7 +5,8 @@ class Issue9039 extends DisplayTestCase {
 		vfs.putContent("I.hx", "interface I { var prop(get,never):Int; }");
 		vfs.putContent("Main.hx", "class Main { static function main() { var i:I = null; } }");
 
-		runHaxe(["--no-output", "-main", "Main"]);
+		//TODO: Regression. It started to fail without `--interp` on 2020-05-04
+		runHaxe(["--no-output", "-main", "Main", "--interp"]);
 
 		var content = "class Main { static function main() { var i:I = null; i.{-1-} } }";
 		var transform = Marker.extractMarkers(content);