'key_part_end' may be used uninitialized [-Werror=maybe-uninitialized]

/path/to/src/sql/table.cc: In function 'bool create_key_infos(const uchar*, const uchar*, uint, KEY*, uint, uint*, TABLE_SHARE*, uint, KEY*, LEX_STRING*)':

/path/to/src/sql/table.cc:923:3: error: 'key_part_end' may be used uninitialized [-Werror=maybe-uninitialized]

  923 |   if (key_part > key_part_end)

      |   ^~

/path/to/src/sql/table.cc:771:41: note: 'key_part_end' was declared here

  771 |   KEY_PART_INFO *first_key_part= NULL, *key_part_end;

      |                                         ^~~~~~~~~~~~