KT-2260 test for non reproducable (probably obsolete) issue

compiler/testData/codegen/regressions/kt2260.kt

@@ -0,0 +1,9 @@
+trait Flusher {
+    fun flush() = "OK"
+}
+
+fun myFlusher() = object : Flusher { }
+
+fun flushIt(flusher: Flusher) = flusher.flush()
+
+fun box() = flushIt(myFlusher())

compiler/tests/org/jetbrains/jet/codegen/TraitsTest.java

@@ -69,6 +69,10 @@ public class TraitsTest extends CodegenTestCase {
         blackBoxFile("regressions/kt2541.kt");
     }
 
+    public void testKt2260() {
+        blackBoxFile("regressions/kt2260.kt");
+    }
+
     public void testFinalMethod() throws Exception {
         blackBoxFile("traits/finalMethod.jet");
     }