Merge branch 'js/ci-gcc-12-fixes' into maint

Fixes real problems noticed by gcc 12 and works around false positives. source: <pull.1238.git.1653351786.gitgitgadget@gmail.com> * js/ci-gcc-12-fixes: dir.c: avoid "exceeds maximum object size" error with GCC v12.x nedmalloc: avoid new compile error compat/win32/syslog: fix use-after-realloc