• we had an unused variable leftover

• make warning-free for both gcc and xlC

exec.c

@@ -2,7 +2,7 @@
 
 #include "sh.h"
 
-__RCSID("$MirOS: src/bin/mksh/exec.c,v 1.35 2007/07/22 13:38:26 tg Exp $");
+__RCSID("$MirOS: src/bin/mksh/exec.c,v 1.36 2007/07/22 14:01:48 tg Exp $");
 
 static int comexec(struct op *, struct tbl *volatile, const char **,
     int volatile);
@@ -95,7 +95,7 @@ execute(struct op *volatile t,
 				 */
 				if (tp && tp->type == CSHELL &&
 				    (tp->flag & SPEC_BI))
-					errorf("");
+					errorfz();
 				/* Deal with FERREXIT, quitenv(), etc. */
 				goto Break;
 			}