Use gcc -ansi -pedantic in 9c.  Fix many non-C89-isms.
diff --git a/src/cmd/ed.c b/src/cmd/ed.c
index 60ba83c..f8ae9f0 100644
--- a/src/cmd/ed.c
+++ b/src/cmd/ed.c
@@ -18,7 +18,7 @@
 	GBSIZE	= 256,		/* max size of global command */
 	MAXSUB	= 9,		/* max number of sub reg exp */
 	ESCFLG	= 0xFFFF,	/* escape Rune - user defined code */
-	EOF	= -1,
+	EOF	= -1
 };
 
 void	(*oldhup)(int);