Gtk warnings about missing labels

a problem since:

commit 164596c00b4361b5b378609f026a1b11ac653970
Date:   Tue Nov 14 12:13:21 2023 +0100

    resave with newer glade version

Change-Id: I2b69229c59ee07939da43b3013f64041c74f5967
Reviewed-on: https://gerrit.libreoffice.org/c/core/+/168913
Tested-by: Jenkins
Reviewed-by: Caolán McNamara <caolan.mcnamara@collabora.com>
diff --git a/sw/uiconfig/swriter/ui/optredlinepage.ui b/sw/uiconfig/swriter/ui/optredlinepage.ui
index f3dff70..e20a3fc 100644
--- a/sw/uiconfig/swriter/ui/optredlinepage.ui
+++ b/sw/uiconfig/swriter/ui/optredlinepage.ui
@@ -91,6 +91,7 @@
                <property name="receives-default">False</property>
                <property name="hexpand">True</property>
                <property name="xalign">0</property>
                <property name="label" translatable="no"></property>
                <property name="draw-indicator">True</property>
                <child>
                  <placeholder/>
@@ -248,6 +249,7 @@
                <property name="receives-default">False</property>
                <property name="hexpand">True</property>
                <property name="xalign">0</property>
                <property name="label" translatable="no"></property>
                <property name="draw-indicator">True</property>
                <child>
                  <placeholder/>
@@ -405,6 +407,7 @@
                <property name="receives-default">False</property>
                <property name="hexpand">True</property>
                <property name="xalign">0</property>
                <property name="label" translatable="no"></property>
                <property name="draw-indicator">True</property>
                <child>
                  <placeholder/>
@@ -518,6 +521,7 @@
                <property name="receives-default">False</property>
                <property name="hexpand">True</property>
                <property name="xalign">0</property>
                <property name="label" translatable="no"></property>
                <property name="draw-indicator">True</property>
                <child>
                  <placeholder/>