Minor: Override getTextOffset() in JetObjectDeclaration

Availability of some intentions depends on this

compiler/frontend/src/org/jetbrains/kotlin/psi/JetObjectDeclaration.java

@@ -141,6 +141,17 @@ public class JetObjectDeclaration extends JetNamedDeclarationStub<KotlinObjectSt
         return JetPsiUtil.isLocal(this);
     }
 
+    @Override
+    public int getTextOffset() {
+        PsiElement nameIdentifier = getNameIdentifier();
+        if (nameIdentifier != null) {
+            return nameIdentifier.getTextRange().getStartOffset();
+        }
+        else {
+            return getObjectKeyword().getTextRange().getStartOffset();
+        }
+    }
+
     @Override
     @NotNull
     public List<JetDeclaration> getDeclarations() {