Build failure with recent gcc

[micwoj92]

Hello,

Version 1.9.2 fails to build with gcc version 15.2.1 20260209 (GCC) with following error:

ios_webkit_debug_proxy.c: In function ‘iwdp_get_content_type’:
ios_webkit_debug_proxy.c:1974:18: error: initialization discards ‘const’ qualifier from pointer target type [-Werror=discarded-qualifiers]
 1974 |     char *fext = strrchr(path, '.');
      |                  ^~~~~~~

[micwoj92]

Seems like this is due to change mentioned in glibc 2.43 release notes:

For ISO C23, the functions bsearch, memchr, strchr, strpbrk, strrchr,
  strstr, wcschr, wcspbrk, wcsrchr, wcsstr and wmemchr that return
  pointers into their input arrays now have definitions as macros that
  return a pointer to a const-qualified type when the input argument is
  a pointer to a const-qualified type.

* The aforementioned change in ISO C23 of the declaration of bsearch,
  memchr, strchr, strpbrk, strrchr, strstr, wcschr, wcspbrk, wcsrchr,
  wcsstr, and wmemchr as const-preserving macros can lead to compilation
  issues in code not set up for it. In particular, gnulib snapshots may need
  to be updated.