Fixed adding of new contact

app/src/main/kotlin/com/tutpro/baresip/Contact.kt

@@ -204,6 +204,10 @@ sealed class Contact {
             BaresipService.contactUpdate.postValue(System.nanoTime())
         }
 
+        fun addBaresipContact(contact: BaresipContact) {
+            BaresipService.baresipContacts.add(contact)
+        }
+
         fun removeBaresipContact(contact: BaresipContact) {
             BaresipService.baresipContacts.remove(contact)
             saveBaresipContacts()

app/src/main/kotlin/com/tutpro/baresip/ContactActivity.kt

@@ -269,7 +269,7 @@ class ContactActivity : AppCompatActivity() {
                     addOrUpdateAndroidContact(this, contact)
                 } else {
                     if (newContact)
-                        Contact.contacts().add(contact)
+                        Contact.addBaresipContact(contact)
                     Contact.saveBaresipContacts()
                     Contact.contactsUpdate()
                 }