Fix build with poppler-25.09.1.

Index: sdext/source/pdfimport/xpdfwrapper/pdfioutdev_gpl.hxx
--- sdext/source/pdfimport/xpdfwrapper/pdfioutdev_gpl.hxx.orig
+++ sdext/source/pdfimport/xpdfwrapper/pdfioutdev_gpl.hxx
@@ -287,7 +287,7 @@ namespace pdfi
 #if POPPLER_CHECK_VERSION(21, 3, 0)
         poppler_bool useTilingPatternFill() override { return true; };
         poppler_bool tilingPatternFill(GfxState *state, Gfx *gfx, Catalog *cat,
-                                       GfxTilingPattern *tPat, const double *mat,
+                                       GfxTilingPattern *tPat, const std::array<double, 6> &mat,
                                        int x0, int y0, int x1, int y1,
                                        double xStep, double yStep) override;
 #endif
