FreeDesktop #5667; fixes crash on 64-bits arches

--- poppler-0.5.0/poppler/JPXStream.h	2005-09-07 04:34:40.000000000 +0200
+++ poppler-0.5.0.new/poppler/JPXStream.h	2006-01-19 23:22:00.000000000 +0100
@@ -211,7 +211,7 @@
 
   //----- computed
   Guint x0, y0, x1, y1;		// bounds of the tile-comp, in ref coords
-  Guint cbW;			// code-block width
+  int cbW;			// code-block width
   Guint cbH;			// code-block height
 
   //----- image data