Patch tree.c add missing return in non-void function

[Jeffrey A Law]

  In message <199802261327.NAA00269@iron.rcp.co.uk>you write:
  > 
  > 
  > 
  > * tree.c (contains_placeholder_p): Add missing return in non-void   
  > function
Thanks.  We fixed this one a little while ago (Feb 22).

Also, you got the args to diff reversed.  It should be
patch <flags> old new

Luckily patch has an option to deal with this automatically :-)

jeff