silence format warning more reliably

1 files changed, 1 insertions, 0 deletions

diff --git a/all.h b/all.h
index 7eba443..850803b 100644
--- a/all.h
+++ b/all.h
@@ -458,6 +458,7 @@ void freeall(void);
 void *vnew(ulong, size_t, Pool);
 void vfree(void *);
 void vgrow(void *, ulong);
+void fmt(char *, char *, ...);
 uint32_t intern(char *);
 char *str(uint32_t);
 int argcls(Ins *, int);