hush: fix for "while false && true; do echo BUG; break; done". closes 6170

function                                             old     new   delta
run_list                                             959     941     -18

Signed-off-by: Denys Vlasenko <vda.linux@googlemail.com>
diff --git a/shell/hush_test/hush-misc/while4.right b/shell/hush_test/hush-misc/while4.right
new file mode 100644
index 0000000..7b24a35
--- /dev/null
+++ b/shell/hush_test/hush-misc/while4.right
@@ -0,0 +1 @@
+Ok:0