Make it compile without deprecated methods

src/messagemodel.cpp

@@ -18,7 +18,13 @@
 #include <KFormat>
 #include <QLocale>
 
+#include "ki18n_version.h"
 #include <array>
+#if KI18N_VERSION >= QT_VERSION_CHECK(5, 89, 0)
+#include <klazylocalizedstring.h>
+#undef I18NC_NOOP
+#define I18NC_NOOP kli18nc
+#endif
 
 using MessagePtr = KMime::Message::Ptr;
 
@@ -27,8 +33,12 @@ using namespace Akonadi;
 namespace
 {
 struct HeaderName {
+#if KI18N_VERSION < QT_VERSION_CHECK(5, 89, 0)
     const char *desc;
     const char *name;
+#else
+    const KLazyLocalizedString desc;
+#endif
 };
 constexpr std::array<HeaderName, 5> headers = {{{I18NC_NOOP("@title:column, message (e.g. email) subject", "Subject")},
                                                 {I18NC_NOOP("@title:column, sender of message (e.g. email)", "Sender")},
@@ -120,7 +130,11 @@ QVariant MessageModel::entityData(const Item &item, int column, int role) const
 QVariant MessageModel::entityHeaderData(int section, Qt::Orientation orientation, int role, HeaderGroup headerGroup) const
 {
     if (section >= 0 && static_cast<std::size_t>(section) < headers.size()) {
+#if KI18N_VERSION < QT_VERSION_CHECK(5, 89, 0)
         return i18nc(headers[section].desc, headers[section].name);
+#else
+        return KLocalizedString(headers[section].desc).toString();
+#endif
     }
 
     return EntityTreeModel::entityHeaderData(section, orientation, role, headerGroup);