patch-ad needs to be updated, like this:

--- iagno/othello.c.orig        2005-01-24 22:44:38.000000000 -0800
+++ iagno/othello.c     2005-03-26 06:30:23.000000000 -0800
@@ -784,14 +784,14 @@
                                 found_free = TRUE;
                 }

-       // check if a player is dead
+       /* check if a player is dead */
         if (!found_me && found_not_me)
                 return (S_LOSING_GAME);
         else if (found_me && !found_not_me)
                 return (S_WINNING_GAME);

-       // if the game is finished, return the actual score rather than
-       // a huristic
+       /* if the game is finished, return the actual score rather than
+        a huristic */
         if (!found_free)
                 return (actual_score);

Question:  I always have trouble updating patchfiles because the SHA1
hashes are always wrong (for me) in 'distfinfo'.  OTOH the hash code
for the source tarball is correct, so my sha1 executable seems okay.
What is different about the patchfiles?