hush: fix hush-misc/break5.tests NOMMU failure

function                                             old     new   delta
hush_main                                           1118    1144     +26
re_execute_shell                                     188     204     +16
------------------------------------------------------------------------------
(add/remove: 0/0 grow/shrink: 2/0 up/down: 42/0)               Total: 42 bytes

1 files changed, 7 insertions, 3 deletions

diff --git a/shell/hush.c b/shell/hush.c
index 13e962383..3388ad7f9 100644
--- a/shell/hush.c
+++ b/shell/hush.c
@@ -2345,8 +2345,8 @@ static void re_execute_shell(const char *s)
         char **argv, **pp;
         unsigned cnt;
 
-        /* hush -$<pid> -?<exitcode> ... -c <cmd> NULL */
-        cnt = 6;
+        /* hush -$<pid> -?<exitcode> -D<depth> ... -c <cmd> NULL */
+        cnt = 7;
         for (cur = G.top_var; cur; cur = cur->next) {
                 if (!cur->flg_export || cur->flg_read_only)
                         cnt += 2;
@@ -2356,6 +2356,7 @@ static void re_execute_shell(const char *s)
         *pp++ = (char *) applet_name;
         *pp++ = xasprintf("-$%u", G.root_pid);
         *pp++ = xasprintf("-?%u", G.last_return_code);
+        *pp++ = xasprintf("-D%u", G.depth_of_loop);
         for (cur = G.top_var; cur; cur = cur->next) {
                 if (cur->varstr == hush_version_str)
                         continue;
@@ -5009,7 +5010,7 @@ int hush_main(int argc, char **argv)
         while (1) {
                 opt = getopt(argc, argv, "c:xins"
 #if !BB_MMU
-                                "$:?:R:V:"
+                                "$:?:D:R:V:"
 #endif
                 );
                 if (opt <= 0)
@@ -5041,6 +5042,9 @@ int hush_main(int argc, char **argv)
                 case '?':
                         G.last_return_code = xatoi_u(optarg);
                         break;
+                case 'D':
+                        G.depth_of_loop = xatoi_u(optarg);
+                        break;
                 case 'R':
                 case 'V':
                         set_local_var(xstrdup(optarg), 0, opt == 'R');