Replace Miod's fix from 2009 by some assert's, because the bug
*should* have been fixed in a different way and I'm too lazy to
verify it. (needs a change to strokeAdjust(), which is private)

--- splash/SplashXPath.h.orig	Wed May 28 20:50:50 2014
+++ splash/SplashXPath.h	Fri May 30 15:33:45 2014
@@ -99,7 +99,8 @@ class SplashXPath { (private)
   void transform(SplashCoord *matrix, SplashCoord xi, SplashCoord yi,
 		 SplashCoord *xo, SplashCoord *yo);
   void strokeAdjust(SplashXPathPoint *pts,
-		    SplashPathHint *hints, int nHints);
+		    SplashPathHint *hints, int nHints,
+		    int plength);
   void grow(int nSegs);
   void addCurve(SplashCoord x0, SplashCoord y0,
 		SplashCoord x1, SplashCoord y1,