fix compilation

hxd/impl/AppContext.hx

@@ -1,5 +1,6 @@
 package hxd.impl;
 
+#if hl
 /**
 	Create an app context to allow multiple apps to run in parallel.
 	Requires compilation with -D multidriver
@@ -61,4 +62,5 @@ class AppContext {
 				c.engine.setCurrent();
 	}
 
-}
+}
+#end