Freeciv

With -Wsign-compare enabled:

./../../src/utility/genlist.c: In function ‘genlist_sort’:
../../../src/utility/genlist.c:611:17: error: comparison of integer expressions of different signedness: ‘int’ and ‘size_t’ {aka ‘const long unsigned int’} [-Werror=sign-compare]
611 | for (i = 0; i < n; i++, myiter = myiter->next) { | ^
../../../src/utility/genlist.c:618:17: error: comparison of integer expressions of different signedness: ‘int’ and ‘size_t’ {aka ‘const long unsigned int’} [-Werror=sign-compare]
618 | for (i = 0; i < n; i++, myiter = myiter->next) {