Recovery for initializer if no LBRACE

- If no LBRACE after 'init' keyword parse initializer without body
- Made getBody() nullable, appropriate checks added

idea/src/org/jetbrains/kotlin/idea/debugger/evaluate/extractFunctionForDebuggerUtil.kt

@@ -179,8 +179,8 @@ private fun addDebugExpressionBeforeContextElement(codeFragment: JetCodeFragment
     fun insertNewInitializer(classBody: JetClassBody): PsiElement? {
         val initializer = psiFactory.createAnonymousInitializer()
         val newInitializer = (classBody.addAfter(initializer, classBody.getFirstChild()) as JetClassInitializer)
-        val block = newInitializer.getBody() as JetBlockExpression
-        return block.getLastChild()
+        val block = newInitializer.getBody() as JetBlockExpression?
+        return block?.getLastChild()
     }
 
     val elementBefore = when {

idea/src/org/jetbrains/kotlin/idea/hierarchy/calls/KotlinCalleeMethodsTreeStructure.java

@@ -70,7 +70,10 @@ public class KotlinCalleeMethodsTreeStructure extends KotlinCallTreeStructure {
             JetClassBody body = classOrObject.getBody();
             if (body != null) {
                 for (JetClassInitializer initializer : body.getAnonymousInitializers()) {
-                    elementsToAnalyze.add(initializer.getBody());
+                    JetExpression initializerBody = initializer.getBody();
+                    if (initializerBody != null) {
+                        elementsToAnalyze.add(initializerBody);
+                    }
                 }
                 for (JetProperty property : body.getProperties()) {
                     JetExpression initializer = property.getInitializer();

idea/src/org/jetbrains/kotlin/idea/quickfix/AddInitKeywordFix.kt

@@ -44,7 +44,7 @@ public class AddInitKeywordFix(element: JetClassInitializer) : JetIntentionActio
 
             val psiFactory = JetPsiFactory(file)
             val initKeyword = psiFactory.createInitKeyword()
-            val anchor = element.getBody()
+            val anchor = element.getBody() ?: return
             element.addBefore(initKeyword, anchor)
             element.addBefore(psiFactory.createWhiteSpace(), anchor)