hush: small fix for repeated continue and fix for wrong loop depth count
 after Ctrl-C; with testcase for first one

diff --git a/shell/hush_test/hush-misc/continue1.right b/shell/hush_test/hush-misc/continue1.right
new file mode 100644
index 0000000..c4a5565
--- /dev/null
+++ b/shell/hush_test/hush-misc/continue1.right
@@ -0,0 +1,8 @@
+A:a
+A:b
+A:c
+OK1
+A:a
+A:b
+A:c
+OK2