[OSSTEST PATCH 07/38] setupboot_grub2: Drop $submenu variable

[Ian Jackson <ian.jackson@xxxxxxxxxxxxx>]

We really only used this to check how many levels deep in { we are.
That can be done by checking $#offsets, which is >0 if we are in a
submenu and not otherwise.  We lose the ability to report the start
line of the submenu, but that's OK.

But as a bonus, we no longer bomb out on nested submenus: previously
the first } would cause $submenu to be undef.  Now we pop from
@offsets and all is fine.

Nested submenus are present in Debian buster.

Signed-off-by: Ian Jackson <ian.jackson@xxxxxxxxxxxxx>
---
 Osstest/Debian.pm | 9 +++------
 1 file changed, 3 insertions(+), 6 deletions(-)

diff --git a/Osstest/Debian.pm b/Osstest/Debian.pm
index ba975b87..b8bf67dc 100644
--- a/Osstest/Debian.pm
+++ b/Osstest/Debian.pm
@@ -452,15 +452,13 @@ sub setupboot_grub2 ($$$$) {
         my @offsets = (0);
         my $entry;
         my $chainentry;
-        my $submenu;
         while (<$f>) {
             next if m/^\s*\#/ || !m/\S/;
             if (m/^\s*\}\s*$/) {
-                die unless $entry || $submenu;
-                if (!$entry && $submenu) {
-                    logm("Met end of a submenu $submenu->{StartLine}..$.. ".
+                die unless $entry || $#offsets;
+                if (!$entry && $#offsets) {
+                    logm("Met end of a submenu at $. (@offsets) ".
                         "Our want kern is $want_kernver");
-                    $submenu= undef;
                     pop @offsets;
                     $offsets[$#offsets]++;
                     next;
@@ -510,7 +508,6 @@ sub setupboot_grub2 ($$$$) {
                 $offsets[$#offsets]++;
             }
             if (m/^\s*submenu\s+[\'\"](.*)[\'\"].*\{\s*$/) {
-                $submenu={ StartLine =>$., MenuEntryPath => join ">", @offsets 
};
                 push @offsets,(0);
             }
             if (m/^\s*chainloader\s*\/EFI\/osstest\/xen.efi/) {
-- 
2.20.1