Fix unit test without ZXing

autotests/extractordocumentnodetest.cpp

@@ -4,6 +4,8 @@
     SPDX-License-Identifier: LGPL-2.0-or-later
 */
 
+#include "config-kitinerary.h"
+
 #include <KItinerary/ExtractorDocumentNode>
 #include <KItinerary/ExtractorDocumentNodeFactory>
 #include <KItinerary/ExtractorDocumentProcessor>
@@ -67,6 +69,9 @@ private Q_SLOTS:
         QCOMPARE(c1.location().toInt(), 0);
 
         c1.processor()->expandNode(c1, &engine);
+#ifndef HAVE_ZXING
+        QSKIP("No ZXing support");
+#endif
         QCOMPARE(c1.childNodes().size(), 1);
         auto c11 = c1.childNodes()[0];
         QVERIFY(!c11.isNull());
@@ -94,6 +99,9 @@ private Q_SLOTS:
         QCOMPARE(c2.location().toInt(), 1);
 
         c2.processor()->expandNode(c2, &engine);
+#ifndef HAVE_ZXING
+        QSKIP("No ZXing support");
+#endif
         QCOMPARE(c2.childNodes().size(), 1);
         auto c21 = c2.childNodes()[0];
         QVERIFY(!c21.isNull());