--- xc/programs/xfs/difs/charinfo.c.fred	Fri Dec 17 08:05:34 1999
+++ xc/programs/xfs/difs/charinfo.c	Mon Dec 20 09:25:58 1999
@@ -493,6 +493,8 @@
 #define LSBBitLeft(b,c)	((b) >> (c))
 #define LSBBitRight(b,c)	((b) << (c))
 
+	if (srcp) {
+	  
 	if (dst_off == src_off)
 	{
 	    if (srcbpr == dstbpr && src_left_bytes == dst_left_bytes)
@@ -573,6 +575,7 @@
 		dstp += dst_extra;
 		srcp += src_extra;
 	    }
+	}
 	}
 	/* skip the amount we just filled in */
 	gd += l->length;