Fix linking error in the !HAVE_FEATURE_PDFIUM case

Change-Id: I74e290ce1af4b85f6495acef4ecc9a276b6df40a

vcl/source/gdi/impgraph.cxx

@@ -17,6 +17,8 @@
  *   the License at http://www.apache.org/licenses/LICENSE-2.0 .
  */
 
+#include <config_features.h>
+
 #include <sal/config.h>
 
 #include <comphelper/processfactory.hxx>
@@ -1622,6 +1624,7 @@ void ReadImpGraphic( SvStream& rIStm, ImpGraphic& rImpGraphic )
                     }
                 }
             }
+#if HAVE_FEATURE_PDFIUM
             else if (nMagic == nPdfMagic)
             {
                 // Stream in PDF data.
@@ -1645,6 +1648,7 @@ void ReadImpGraphic( SvStream& rIStm, ImpGraphic& rImpGraphic )
 
                 rImpGraphic.meType = GraphicType::Bitmap;
             }
+#endif
             else
             {
                 rIStm.SetError(nOrigError);