fdo#68210: Make tiff import work again with merged-libs

- there was a symbol mismatch for dynamic loading
- while this fixes fdo#68210, similar fixes are likely needed for the other
  dynamically loaded functionality

Change-Id: I7e4d6baf256dbe7b145dcbc118b4cac2075e07f5

filter/source/graphicfilter/itiff/itiff.cxx

@@ -1358,7 +1358,10 @@ sal_Bool TIFFReader::ReadTIFF(SvStream & rTIFF, Graphic & rGraphic )
 
 //================== GraphicImport - the exported function ================
 
-#if defined(DISABLE_DYNLOADING) || defined(LIBO_MERGELIBS)
+// this needs to be kept in sync with
+// ImpFilterLibCacheEntry::GetImportFunction() from
+// vcl/source/filter/graphicfilter.cxx
+#if defined(DISABLE_DYNLOADING)
 #define GraphicImport itiGraphicImport
 #endif