KT-2279 Setter generated for abstract var is not abstract

#KT-2279 fixed

compiler/backend/src/org/jetbrains/jet/codegen/PropertyCodegen.java

@@ -251,6 +251,7 @@ public class PropertyCodegen {
         int modifiers = JetTypeMapper.getAccessModifiers(propertyDescriptor, 0);
         PropertySetterDescriptor setter = propertyDescriptor.getSetter();
         int flags = setter == null ? modifiers : JetTypeMapper.getAccessModifiers(setter, modifiers);
+        flags |= (propertyDescriptor.getModality() == Modality.ABSTRACT ? Opcodes.ACC_ABSTRACT : 0);
         generateDefaultSetter(propertyDescriptor, flags, p);
     }
 

compiler/testData/codegen/regressions/kt1482_2279.kt

@@ -1,5 +1,5 @@
 abstract class ClassValAbstract {
-    abstract val a: Int
+    abstract var a: Int
 
     class object {
         val methods = (this as java.lang.Object).getClass()?.getClassLoader()?.loadClass("ClassValAbstract")?.getMethods()

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

@@ -227,9 +227,9 @@ public class PropertyGenTest extends CodegenTestCase {
         blackBoxFile("regressions/kt1398.kt");
     }
 
-    public void testKt1482() throws Exception {
+    public void testKt1482_2279() throws Exception {
         createEnvironmentWithFullJdk();
-        blackBoxFile("regressions/kt1482.kt");
+        blackBoxFile("regressions/kt1482_2279.kt");
     }
 
     public void testKt1714() throws Exception {