sh: Fix $? in heredocs on simple commands.

PR:		bin/41410

bin/sh/eval.c

@@ -409,6 +409,7 @@ evalsubshell(union node *n, int flags)
 	struct job *jp;
 	int backgnd = (n->type == NBACKGND);
 
+	oexitstatus = exitstatus;
 	expredir(n->nredir.redirect);
 	if ((!backgnd && flags & EV_EXIT && !have_traps()) ||
 			forkshell(jp = makejob(n, 1), n, backgnd) == 0) {
@@ -436,6 +437,7 @@ evalredir(union node *n, int flags)
 	struct jmploc *savehandler;
 	volatile int in_redirect = 1;
 
+	oexitstatus = exitstatus;
 	expredir(n->nredir.redirect);
 	savehandler = handler;
 	if (setjmp(jmploc.loc)) {
@@ -478,7 +480,6 @@ expredir(union node *n)
 	for (redir = n ; redir ; redir = redir->nfile.next) {
 		struct arglist fn;
 		fn.lastp = &fn.list;
-		oexitstatus = exitstatus;
 		switch (redir->type) {
 		case NFROM:
 		case NTO:

tools/regression/bin/sh/expansion/heredoc2.0

@@ -0,0 +1,15 @@
+# $FreeBSD$
+
+f() { return $1; }
+
+[ `f 42; cat <<EOF
+$?
+EOF
+` = 42 ] || echo simple command bad
+
+long=`printf %08192d 0`
+
+[ `f 42; cat <<EOF
+$long.$?
+EOF
+` = $long.42 ] || echo long simple command bad