[tests] jvm is not ready for this one yet

tests/unit/src/unit/issues/Issue6379.hx

@@ -1,7 +1,8 @@
 package unit.issues;
 
 class Issue6379 extends unit.Test {
-	#if (!lua)
+	// See https://github.com/HaxeFoundation/haxe/issues/8799 for jvm
+	#if (!jvm && !lua)
 	function test() {
         eq(g("x_x").length, 2);
     }