Extract JetProperty#hasInitializer() and use it where appropriate

idea/src/org/jetbrains/jet/plugin/intentions/declarations/ConvertMemberToExtension.java

@@ -67,7 +67,7 @@ public class ConvertMemberToExtension extends BaseIntentionAction {
     ) {
         JetCallableDeclaration declaration = getTarget(editor, file);
         if (declaration instanceof JetProperty) {
-            if (((JetProperty) declaration).getInitializer() != null) return false;
+            if (((JetProperty) declaration).hasInitializer()) return false;
         }
         return declaration != null
                && declaration.getParent() instanceof JetClassBody

idea/src/org/jetbrains/jet/plugin/intentions/declarations/DeclarationUtils.java

@@ -42,7 +42,7 @@ public class DeclarationUtils {
     }
 
     public static boolean checkSplitProperty(@NotNull JetProperty property) {
-        return property.getInitializer() != null && property.isLocal();
+        return property.hasInitializer() && property.isLocal();
     }
 
     public static final Predicate<PsiElement> SKIP_DELIMITERS = new Predicate<PsiElement>() {
@@ -68,7 +68,7 @@ public class DeclarationUtils {
         }
 
         if (property == null) return null;
-        if (property.getInitializer() != null) return null;
+        if (property.hasInitializer()) return null;
         if (!JetPsiUtil.isOrdinaryAssignment(initializer)) return null;
 
         JetBinaryExpression assignment = (JetBinaryExpression) initializer;

idea/src/org/jetbrains/jet/plugin/quickfix/RemovePartsFromPropertyFix.java

@@ -42,7 +42,7 @@ public class RemovePartsFromPropertyFix extends JetIntentionAction<JetProperty>
     }
 
     private RemovePartsFromPropertyFix(@NotNull JetProperty element) {
-        this(element, element.getInitializer() != null,
+        this(element, element.hasInitializer(),
              element.getGetter() != null && element.getGetter().getBodyExpression() != null,
              element.getSetter() != null && element.getSetter().getBodyExpression() != null);
     }