Show message when contact already in group

src/profanity.c

@@ -148,6 +148,14 @@ prof_handle_duck_result(const char * const result)
     ui_current_page_off();
 }
 
+void
+prof_handle_already_in_group(const char * const barejid,
+    const char * const group)
+{
+    ui_contact_already_in_group(barejid, group);
+    ui_current_page_off();
+}
+
 void
 prof_handle_error_message(const char *from, const char *err_msg)
 {