DESTROY not triggered on upgraded lexvar

[atoomic]

Extract from tests 163

my $destroyed = 0;
sub  X::DESTROY { $destroyed = 1 }
{
	my $x;
	BEGIN {$x = sub { }  }
	$x = bless {}, X;
}
print qq{ok\n} if $destroyed == 1;

When adding some extra Devel::Peek warnings there we can notice two issues

sub  X::DESTROY { $destroyed = 1 }
{
	my $x;  
	BEGIN {$x = sub { }  }
  eval q{use Devel::Peek; warn "==== 1\n"; Dump($x)};
	$x = bless {}, X;
  eval q{use Devel::Peek; warn "==== 2\n"; Dump($x)};
}
print qq{DESTROYed $X::destroyed\n};# if $destroyed == 1;

1. The CV Outside is NULL whereas it should point to the main one
2. the refcnt for the cv entry ( in sv_list is set to 2 whereas we should expect one )
3. WEAKOUTSIDE is enabled whereas this was not set at save time, something is enabling it ( op.c or pad.c ? )

Compiled version

==== 1
SV = IV(0x61a378) at 0x61a380
  REFCNT = 3
  FLAGS = (ROK)
  RV = 0x61a398
  SV = PVCV(0x617628) at 0x61a398
    REFCNT = 2
    FLAGS = (PADSTALE,ANON,WEAKOUTSIDE,CVGV_RC)
    COMP_STASH = 0x619af8	"main"
    START = 0x6257e0 ===> 1
    ROOT = 0x632370
    GVGV::GV = 0x61d480	"main" :: "__ANON__"
    FILE = "test.pl"
    DEPTH = 0
    FLAGS = 0x490
    OUTSIDE_SEQ = 511
    PADLIST = 0x615d40
    PADNAME = 0x615ee0(0x189fb70) PAD = 0x61a3c8(0x189fb90)
    OUTSIDE = 0x0 (null)
==== 2
SV = IV(0x61a370) at 0x61a380
  REFCNT = 3
  FLAGS = (ROK)
  RV = 0x18b7fc0
  SV = PVHV(0x189b320) at 0x18b7fc0
    REFCNT = 1
    FLAGS = (OBJECT,SHAREKEYS)
    STASH = 0x61a308	"X"
    ARRAY = 0x0
    KEYS = 0
    FILL = 0
    MAX = 7
DESTROYed 0

Uncompiled version

==== 1
SV = IV(0xe3ba38) at 0xe3ba48
  REFCNT = 2
  FLAGS = (ROK)
  RV = 0xe3bb98
  SV = PVCV(0xe2fd88) at 0xe3bb98
    REFCNT = 1
    FLAGS = (PADSTALE,ANON,CVGV_RC)
    COMP_STASH = 0xe1bff8	"main"
    START = 0xe21650 ===> 1
    ROOT = 0xe21610
    GVGV::GV = 0xe3bbc8	"main" :: "__ANON__"
    FILE = "test.pl"
    DEPTH = 0
    FLAGS = 0x480
    OUTSIDE_SEQ = 6
    PADLIST = 0xe21420
    PADNAME = 0xe21470(0xe214a0) PAD = 0xe3bbb0(0xe21440)
    OUTSIDE = 0xe1c3a0 (MAIN)
==== 2
SV = IV(0xe3ba38) at 0xe3ba48
  REFCNT = 2
  FLAGS = (ROK)
  RV = 0xe3b988
  SV = PVHV(0xe230c0) at 0xe3b988
    REFCNT = 1
    FLAGS = (OBJECT,SHAREKEYS)
    STASH = 0xe3b9b8	"X"
    ARRAY = 0x0
    KEYS = 0
    FILL = 0
    MAX = 7
DESTROYed 1