Qt: Fix 5.15 deprecation warnings

QString is no longer allowed to be append()ed to QByteArray.

Change-Id: I177e271d01c51d190b57f679f38d11b31b1f96c4
Reviewed-on: https://code.wireshark.org/review/37879
Petri-Dish: Roland Knall <rknall@gmail.com>
Tested-by: Petri Dish Buildbot
Reviewed-by: Roland Knall <rknall@gmail.com>

2 files changed, 4 insertions, 4 deletions

diff --git a/ui/qt/interface_toolbar.cpp b/ui/qt/interface_toolbar.cpp
index f4517655ec..55c2469cd4 100644
--- a/ui/qt/interface_toolbar.cpp
+++ b/ui/qt/interface_toolbar.cpp
@@ -238,14 +238,14 @@ QWidget *InterfaceToolbar::createSelector(iface_toolbar_control *control)
         QString display = QString().fromUtf8((gchar *)val->display);
         QByteArray interface_value;
 
-        interface_value.append(value);
+        interface_value.append(value.toUtf8());
         if (display.isEmpty())
         {
             display = value;
         }
         else
         {
-            interface_value.append('\0' + display);
+            interface_value.append(QString('\0' + display).toUtf8());
         }
         combobox->addItem(display, value);
         if (val->is_default)
diff --git a/ui/qt/tap_parameter_dialog.cpp b/ui/qt/tap_parameter_dialog.cpp
index 284ba9ab96..03c4ed1439 100644
--- a/ui/qt/tap_parameter_dialog.cpp
+++ b/ui/qt/tap_parameter_dialog.cpp
@@ -276,8 +276,8 @@ QByteArray TapParameterDialog::getTreeAsString(st_format_type format)
         plain_header.append('\n');
 
         ba.append(top_separator);
-        ba.append(file_header);
-        ba.append(plain_header);
+        ba.append(file_header.toUtf8());
+        ba.append(plain_header.toUtf8());
         ba.append(footer);
         break;
     }