Java to Kotlin converter: fixed some bugs in switch statement conversion

j2k/tests/testData/ast/switch/fallDownWithBlocks.java

@@ -0,0 +1,16 @@
+//file
+public class C {
+    public static void main(String[] args) {
+        switch (args.length) {
+            case 1: {
+                int a = 1;
+                System.out.print("1");
+            }
+
+            case 2: {
+                int a = 2;
+                System.out.print("2");
+            }
+        }
+    }
+}

j2k/tests/testData/ast/switch/fallDownWithBlocks.kt

@@ -0,0 +1,24 @@
+public class C {
+    class object {
+        public fun main(args: Array<String>) {
+            when (args.size) {
+                1 -> {
+                    run {
+                        val a = 1
+                        System.out.print("1")
+                    }
+                    run {
+                        val a = 2
+                        System.out.print("2")
+                    }
+                }
+
+                2 -> {
+                    val a = 2
+                    System.out.print("2")
+                }
+            }
+        }
+    }
+}
+fun main(args: Array<String>) = C.main(args)