better handling of empty if/else blocks

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

@@ -220,4 +220,9 @@ public class ControlStructuresTest extends CodegenTestCase {
         createEnvironmentWithFullJdk();
         blackBoxFile("regressions/kt434.jet");
     }
+
+    public void testQuicksort() throws Exception {
+        blackBoxFile("controlStructures/quicksort.jet");
+//        System.out.println(generateToText());
+    }
 }

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

@@ -266,7 +266,7 @@ public class PrimitiveTypesTest extends CodegenTestCase {
     }
 
     public void testKt239 () throws Exception {
-        blackBoxFile("regressions/kt242.jet");
+        blackBoxFile("regressions/kt239.jet");
     }
 
     public void testKt243 () throws Exception {