[cs] added working test (thanks to Simon's patch)

tests/unit/TestBasetypes.hx

@@ -379,11 +379,9 @@ class TestBasetypes extends Test {
 		var hash1:unit.MyAbstract.MyHash<String> = ["k1", "v1", "k2", "v2"];
 		eq("v1", hash1.get("k1"));
 		eq("v2", hash1.get("k2"));
-#if !cs //waiting fix for 1516
 		var hash1:unit.MyAbstract.MyHash<Int> = [1, 2, 3, 4];
 		eq(2, hash1.get("_s1"));
 		eq(4, hash1.get("_s3"));
-#end
 	}
 
 	function testAbstractToString() {