Prepare for ISOtoCountry being deprecated

It's no longer needed for address formatting with 5.89 anyway, as the
formatting code expands country codes already.

plugins/messageviewer/grantlee/grantleeextension.cpp

@@ -8,6 +8,7 @@
 
 #include <KContacts/Address>
 #include <KItinerary/Place>
+#include <kcontacts_version.h>
 
 #include <grantlee/exception.h>
 #include <grantlee/parser.h>
@@ -30,7 +31,11 @@ QVariant AddressFormatter::doFilter(const QVariant &input, const QVariant &arg,
     address.setPostalCode(a.postalCode());
     address.setLocality(a.addressLocality());
     address.setRegion(a.addressRegion());
+#if KContacts_VERSION <= QT_VERSION_CHECK(5, 88, 0)
     address.setCountry(KContacts::Address::ISOtoCountry(a.addressCountry()));
+#else
+    address.setCountry(a.addressCountry());
+#endif
 
     auto s = escape(address.formattedAddress().trimmed().replace(QLatin1String("\n\n"), QLatin1String("\n")));
     return s.get().replace(QLatin1Char('\n'), QLatin1String("<br/>"));