print/scribus: fix build with new poppler

Hi,

this fixes print/scribus with poppler-26.02.0.

To be committed together with poppler, because I'm not sure wether
I properly kept all the #if's from the upstream commit (there were
some conflicts).

Ciao,
Kili

ps: update for poppler will follow in a few minutes.

Index: patches/patch-scribus_plugins_import_pdf_importpdf_cpp
===================================================================
RCS file: /cvs/ports/print/scribus/patches/patch-scribus_plugins_import_pdf_importpdf_cpp,v
diff -u -p -r1.8 patch-scribus_plugins_import_pdf_importpdf_cpp
--- patches/patch-scribus_plugins_import_pdf_importpdf_cpp 30 Oct 2025 20:57:55 -0000 1.8
+++ patches/patch-scribus_plugins_import_pdf_importpdf_cpp 18 Feb 2026 20:34:37 -0000
@@ -1,9 +1,48 @@
https://github.com/scribusproject/scribus/commit/188d030acd0cb71e89dbb57695fe52158b6a0959
+https://github.com/scribusproject/scribus/commit/28bd3be104c06b9d4532affe150f7b74fe5b3e59

Index: scribus/plugins/import/pdf/importpdf.cpp
--- scribus/plugins/import/pdf/importpdf.cpp.orig
+++ scribus/plugins/import/pdf/importpdf.cpp
-@@ -416,11 +416,11 @@ bool PdfPlug::convert(const QString& fn)
+@@ -79,7 +79,11 @@ QImage PdfPlug::readThumbnail(const QString& fName)
+ bgColor[0] = 255;
+ bgColor[1] = 255;
+ bgColor[2] = 255;
++#if POPPLER_ENCODED_VERSION >= POPPLER_VERSION_ENCODE(26, 2, 0)
++ SplashOutputDev dev(splashModeXBGR8, 4, bgColor, true);
++#else
+ SplashOutputDev dev(splashModeXBGR8, 4, false, bgColor, true);
++