Fix the following build failure raised since bump of pcre2 to version 10.43 in commitfa9e575776and https://github.com/PCRE2Project/pcre2/commit/014c82d7bcc2873cdb1f3abc5e5348587f477ba4: tftpd_pcre.c: In function 'tftpd_pcre_open': tftpd_pcre.c:109:37: error: passing argument 1 of 'pcre2_substring_list_free_8' from incompatible pointer type [-Wincompatible-pointer-types] 109 | pcre2_substring_list_free((const PCRE2_UCHAR **)substrlist); | ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ | | | const PCRE2_UCHAR8 ** {aka const unsigned char **} In file included from tftpd_pcre.h:24, from tftpd_pcre.c:35: /home/autobuild/autobuild/instance-10/output-1/host/powerpc64le-buildroot-linux-gnu/sysroot/usr/include/pcre2.h:949:1: note: expected 'PCRE2_UCHAR8 **' {aka 'unsigned char **'} but argument is of type 'const PCRE2_UCHAR8 **' {aka 'const unsigned char **'} 949 | PCRE2_TYPES_STRUCTURES_AND_FUNCTIONS | ^ Fixes:fa9e575776- http://autobuild.buildroot.org/results/46565c834a8162a651944885104027610a65f9c3 Signed-off-by: Fabrice Fontaine <fontaine.fabrice@gmail.com> Reviewed-by: Yegor Yefremov <yegorslists@googlemail.com> Signed-off-by: Peter Korsgaard <peter@korsgaard.com>