Make it compile against qt5.15. SkipEmptyParts is part of Qt::.

src/kquery.cpp

@@ -560,7 +560,11 @@ void KQuery::setRegExp(const QString &regexp, bool caseSensitive)
 {
     QRegExp *regExp = nullptr;
     QRegExp sep(QStringLiteral(";"));
+#if QT_VERSION < QT_VERSION_CHECK(5, 15, 0)
     const QStringList strList = regexp.split(sep, QString::SkipEmptyParts);
+#else
+    const QStringList strList = regexp.split(sep, Qt::SkipEmptyParts);
+#endif
     //  QRegExp globChars ("[\\*\\?\\[\\]]", TRUE, FALSE);
     while (!m_regexps.isEmpty()) {
         delete m_regexps.takeFirst();
@@ -610,7 +614,11 @@ void KQuery::slotendProcessLocate(int code, QProcess::ExitStatus)
         if (!bufferLocate.isEmpty()) {
             QString str = QString::fromLocal8Bit(bufferLocate);
             bufferLocate.clear();
+#if QT_VERSION < QT_VERSION_CHECK(5, 15, 0)
             slotListEntries(str.split(QLatin1Char('\n'), QString::SkipEmptyParts));
+#else
+            slotListEntries(str.split(QLatin1Char('\n'), Qt::SkipEmptyParts));
+#endif
         }
     }
     emit result(0);