sh: Fix INTOFF leak when a redirection on a compound command fails.

Reported by:	bdrewery

bin/sh/eval.c

@@ -470,6 +470,7 @@ evalredir(union node *n, int flags)
 		if (e == EXERROR || e == EXEXEC) {
 			if (in_redirect) {
 				exitstatus = 2;
+				FORCEINTON;
 				return;
 			}
 		}

bin/sh/tests/errors/Makefile

@@ -29,6 +29,7 @@ ${PACKAGE}FILES+=		redirection-error4.0
 ${PACKAGE}FILES+=		redirection-error5.0
 ${PACKAGE}FILES+=		redirection-error6.0
 ${PACKAGE}FILES+=		redirection-error7.0
+${PACKAGE}FILES+=		redirection-error8.0
 ${PACKAGE}FILES+=		write-error1.0
 
 .include <bsd.test.mk>

bin/sh/tests/errors/redirection-error8.0

@@ -0,0 +1,5 @@
+# $FreeBSD$
+
+$SH -c '{ { :; } </var/empty/x; } 2>/dev/null || kill -INT $$; echo continued'
+r=$?
+[ "$r" -gt 128 ] && [ "$(kill -l "$r")" = INT ]