ash: fix error code regression

The commit 'ash,hush: set exit code 127 in "sh /does/not/exist" case'
only partly implemented the dash commit '[ERROR] Allow the originator
of EXERROR to set the exit status'.  This resulted in incorrect error
codes for a syntax error:

   $ )
   $ echo $?
   0

or a redirection error for a special builtin:

   $ rm -f xxx
   $ eval cat <xxx
   $ echo $?
   0

Signed-off-by: Ron Yorston <rmy@pobox.com>
Reported-by: Martijn Dekker <martijn@inlv.org>
Signed-off-by: Denys Vlasenko <vda.linux@googlemail.com>
diff --git a/shell/hush_test/hush-misc/exitcode2.right b/shell/hush_test/hush-misc/exitcode2.right
new file mode 100644
index 0000000..0a57b9b
--- /dev/null
+++ b/shell/hush_test/hush-misc/exitcode2.right
@@ -0,0 +1,4 @@
+hush: syntax error: unexpected )
+Done:2
+hush: can't open 'does_not_exist': No such file or directory
+Done:1
diff --git a/shell/hush_test/hush-misc/exitcode2.tests b/shell/hush_test/hush-misc/exitcode2.tests
new file mode 100755
index 0000000..79a6ebd
--- /dev/null
+++ b/shell/hush_test/hush-misc/exitcode2.tests
@@ -0,0 +1,12 @@
+# syntax error should return status 2
+cat >test.sh <<EOF
+)
+EOF
+chmod +x test.sh
+$THIS_SH ./test.sh
+echo Done:$?
+rm -f test.sh
+
+# redirection error with special builtin should return status 1
+(eval cat <does_not_exist)
+echo Done:$?