adding some null checks at menu items

app/src/main/kotlin/com/simplemobiletools/contacts/pro/activities/ViewContactActivity.kt

@@ -109,7 +109,9 @@ class ViewContactActivity : ContactActivity() {
             }
 
             findItem(R.id.edit).setOnMenuItemClickListener {
+                if (contact != null) {
                     launchEditContact(contact!!)
+                }
                 true
             }
 
@@ -294,9 +296,11 @@ class ViewContactActivity : ContactActivity() {
     }
 
     private fun openWith() {
+        if (contact != null) {
             val uri = getContactPublicUri(contact!!)
             launchViewContactIntent(uri)
         }
+    }
 
     private fun setupFavorite() {
         contact_toggle_favorite.apply {