amd64 fixes

gui-x11/screen.c

@@ -566,6 +566,8 @@ initmap(Window w)
 		 * some displays say MSB even though they run on LSB.
 		 * Besides, this is more anal.
 		 */
+		if(xscreendepth != DefaultDepth(xdisplay, DefaultScreen(xdisplay)))
+			xcmap = XCreateColormap(xdisplay, w, xvis, AllocNone);
 
 		c = map[19];
 		/* find out index into colormap for our RGB */

gui-x11/xmem.h

@@ -31,7 +31,7 @@ struct Xmem
 	int	dirty;
 	Rectangle dirtyr;
 	Rectangle r;
-	ulong pc;	/* who wrote into xi */
+	uintptr pc;	/* who wrote into xi */
 };
 
 extern	int		xtblbit;