Matter fix exception when fabrics is not initialized (arendst#20667)

lib/libesp32/berry_matter/src/embedded/Matter_Session_Store.be

@@ -102,7 +102,11 @@ class Matter_Session_Store
  # Count the number of commissionned fabrics, i.e. persisted
  def count_active_fabrics()
  self.remove_expired() # clean before
- return self.fabrics.count_persistables()
+ if self.fabrics != nil
+ return self.fabrics.count_persistables()
+ else
+ return 0
+ end
  end
 
  #############################################################

lib/libesp32/berry_matter/src/solidify/solidified_Matter_Session_Store.h

@@ -508,20 +508,28 @@ be_local_closure(Matter_Session_Store_count_active_fabrics, /* name */
  0, /* has sup protos */
  NULL, /* no sub protos */
  1, /* has constants */
- ( &(const bvalue[ 3]) { /* constants */
+ ( &(const bvalue[ 4]) { /* constants */
  /* K0 */ be_nested_str_weak(remove_expired),
  /* K1 */ be_nested_str_weak(fabrics),
  /* K2 */ be_nested_str_weak(count_persistables),
+ /* K3 */ be_const_int(0),
  }),
  be_str_weak(count_active_fabrics),
  &be_const_str_solidified,
- ( &(const binstruction[ 6]) { /* code */
+ ( &(const binstruction[13]) { /* code */
  0x8C040100, // 0000 GETMET R1 R0 K0
  0x7C040200, // 0001 CALL R1 1
  0x88040101, // 0002 GETMBR R1 R0 K1
- 0x8C040302, // 0003 GETMET R1 R1 K2
- 0x7C040200, // 0004 CALL R1 1
- 0x80040200, // 0005 RET 1 R1
+ 0x4C080000, // 0003 LDNIL R2
+ 0x20040202, // 0004 NE R1 R1 R2
+ 0x78060004, // 0005 JMPF R1 #000B
+ 0x88040101, // 0006 GETMBR R1 R0 K1
+ 0x8C040302, // 0007 GETMET R1 R1 K2
+ 0x7C040200, // 0008 CALL R1 1
+ 0x80040200, // 0009 RET 1 R1
+ 0x70020000, // 000A JMP #000C
+ 0x80060600, // 000B RET 1 K3
+ 0x80000000, // 000C RET 0
  })
  )
 );