Revert dbaf2f1a92f6 and instead move initialization of "coherence" to

emu/NetBSD/os.c

As explained in inferno-os issue 335:

> The definition of coherence deliberately takes advantage of a C rule
> to avoid anyone having to change an existing fork of emu (eg, for a
> new platform), to account for the arrival of "coherence".  If a
> given port doesn't define it, it will be nil and main will fill it
> in.  If as on Windows or now NetBSD, it needs to be defined from the
> start, the os.c for that platform should do it, but still no other
> platforms need source changes.

1 files changed, 1 insertions, 1 deletions

diff --git a/emu/port/fns.h b/emu/port/fns.h
index 36d341b7..6a0809c0 100644
--- a/emu/port/fns.h
+++ b/emu/port/fns.h
@@ -20,7 +20,7 @@ Dir*		chandirstat(Chan*);
 void		cinit(void);
 char*	clipread(void);
 int		clipwrite(char*);
-extern void	(*coherence)(void);
+void	(*coherence)(void);
 void		copen(Chan*);
 void		cmderror(Cmdbuf*, char*);
 Block*	concatblock(Block*);