fix for flow.c prototype problem

[Jeffrey A Law]

  In message < rzqsogvayz4.fsf@djlvig.dl.ac.uk >you write:
  > The current (as of a few minutes ago) source won't build because of a
  > bad forward declaration in flow.c.  Doubtless someone will have fixed
  > it anyhow before they see this...
  > 
  > 1998-10-11  Dave Love  <d.love@dl.ac.uk>
  > 
  > 	* flow.c: Fix find_basic_blocks_1 prototype.
Someone already took care of it (thanks whoever you are :-)

Note that obvious stuff like this you should just check in the fix and tell
egcs-patches what you did.

jeff