Andrew Bartlett 5e690fe70c Avoid -Werror=address failure due to embedded NULL check in _mg_buffer_zero ...

Seen with Ubuntu 18.04
gcc version 7.5.0 (Ubuntu 7.5.0-3ubuntu1~18.04)

mech/gss_krb5.c: In function ‘gss_krb5_ccache_name’:
mech/gss_krb5.c:501:18: error: the address of ‘buffer’ will always evaluate as ‘true’ [-Werror=address]
  _mg_buffer_zero(&buffer);
                  ^
mech/mech_locl.h:72:7: note: in definition of macro ‘_mg_buffer_zero’
   if (buffer) {   \
       ^~~~~~

Signed-off-by: Andrew Bartlett <abartlet@samba.org>

2020-05-27 23:23:43 -05:00

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