hush: fix this case: echo "SCRIPT" | hush

Signed-off-by: Denys Vlasenko <vda.linux@googlemail.com>
diff --git a/shell/hush_test/hush-misc/piped_input.tests b/shell/hush_test/hush-misc/piped_input.tests
new file mode 100755
index 0000000..ec7e498
--- /dev/null
+++ b/shell/hush_test/hush-misc/piped_input.tests
@@ -0,0 +1,3 @@
+exed 2>&1
+echo 'echo TEST; false' | $THIS_SH
+echo One:$?