--- /home/zimmer/xfree4.2.0/xc/lib/X11/PolyReg.c	2001-12-14 20:54:03.000000000 +0100
+++ /home/gern/xfree/PolyReg.c	2004-04-19 11:09:56.000000000 +0200
@@ -409,7 +409,10 @@
  
     if (!(reg->rects = (BOX *)Xrealloc((char *)reg->rects, 
 	    (unsigned) (sizeof(BOX) * numRects))))  {
-	Xfree(prevRects);
+        if (numRects != 0) {
+	    Xfree(prevRects);
+	}
+	reg->size = 0;
 	return(0);
     }