fix: Hide the 'Add Member' button for broadcasts

Author: Hocuri

src/main/java/org/thoughtcrime/securesms/ProfileAdapter.java

@@ -314,7 +314,9 @@ public void changeData(@Nullable int[] memberList, @Nullable DcContact dcContact
       itemData.add(new ItemData(ITEM_DIVIDER, null, 0));
       if (dcChat != null) {
         if (dcChat.canSend() && dcChat.isEncrypted()) {
-          itemData.add(new ItemData(ITEM_MEMBERS, DcContact.DC_CONTACT_ID_ADD_MEMBER, 0));
+          if (!isOutBroadcast) {
+            itemData.add(new ItemData(ITEM_MEMBERS, DcContact.DC_CONTACT_ID_ADD_MEMBER, 0));
+          }
           itemData.add(new ItemData(ITEM_MEMBERS, DcContact.DC_CONTACT_ID_QR_INVITE, 0));
         }
       }

src/main/java/org/thoughtcrime/securesms/util/SelectedContactsAdapter.java

@@ -54,7 +54,9 @@ public SelectedContactsAdapter(@NonNull Context context,
 
   public void changeData(Collection<Integer> contactIds) {
     contacts.clear();
-    contacts.add(DC_CONTACT_ID_ADD_MEMBER);
+    if (!isBroadcast) {
+      contacts.add(DC_CONTACT_ID_ADD_MEMBER);
+    }
     if (contactIds != null) {
       for (int id : contactIds) {
         if (id != DC_CONTACT_ID_SELF) {
@@ -75,7 +77,7 @@ public void remove(@NonNull Integer contactId) {
   }
 
   public Set<Integer> getContacts() {
-    final Set<Integer> set = new HashSet<>(contacts.size()-1);
+    final Set<Integer> set = new HashSet<>(contacts.size());
     for (int i = 1; i < contacts.size(); i++) {
       set.add(contacts.get(i));
     }