tdf#49895: search in Options: check if label exists (related to tdf#157266)

- since ids in ui files can be changed or removed,
we have to check if they are exits or not, to prevent
any crash or misbehavior.
- Proper solution will be iterating over the
widget ids and collecting their strings without
based on a list of identifiers.

Change-Id: I2088af6842ad0acd00838a37295dc2e6140096f2
Reviewed-on: https://gerrit.libreoffice.org/c/core/+/157103
Reviewed-by: Andreas Heinisch <andreas.heinisch@yahoo.de>
Tested-by: Andreas Heinisch <andreas.heinisch@yahoo.de>

1 files changed, 8 insertions, 2 deletions

diff --git a/cui/source/options/optaccessibility.cxx b/cui/source/options/optaccessibility.cxx
index e0667d51304d..f81c893673ca 100644
--- a/cui/source/options/optaccessibility.cxx
+++ b/cui/source/options/optaccessibility.cxx
@@ -54,13 +54,19 @@ OUString SvxAccessibilityOptionsTabPage::GetAllStrings()
     OUString labels[] = { "label1", "label2", "label13" };
 
     for (const auto& label : labels)
-        sAllStrings += m_xBuilder->weld_label(label)->get_label() + " ";
+    {
+        if (const auto& pString = m_xBuilder->weld_label(label))
+            sAllStrings += pString->get_label() + " ";
+    }
 
     OUString checkButton[] = { "acctool",      "textselinreadonly", "animatedgraphics",
                                "animatedtext", "autofontcolor",     "systempagepreviewcolor" };
 
     for (const auto& check : checkButton)
-        sAllStrings += m_xBuilder->weld_check_button(check)->get_label() + " ";
+    {
+        if (const auto& pString = m_xBuilder->weld_check_button(check))
+            sAllStrings += pString->get_label() + " ";
+    }
 
     return sAllStrings.replaceAll("_", "");
 }