pam_env: remove allocator sizeof operator mismatch

An array of strings is allocated (into a pointer) so the single array
element to be allocated is char*.
Since sizeof(char**) should be always equal to sizeof(char*) this caused
no issues so far.

Reported by Clang analyzer:

    pam_env.c:391:14: warning: Result of 'malloc' is converted to a pointer of type 'char *', which is incompatible with sizeof operand type 'char **' [unix.MallocSizeof]
      391 |     *lines = malloc((i + 1)* sizeof(char**));
          |              ^~~~~~          ~~~~~~~~~~~~~~
    pam_env.c:401:13: warning: Result of 'realloc' is converted to a pointer of type 'char *', which is incompatible with sizeof operand type 'char **' [unix.MallocSizeof]
      401 |       tmp = realloc(*lines, (++i + 1) * sizeof(char**));
          |             ^~~~~~~                     ~~~~~~~~~~~~~~

0 files changed, 0 insertions, 0 deletions