Free cwd state in cwd_globals_dtor function

[cheplv]

Fix memleak on destructor

[Girgias]

Not a ZTS expert, but does this need to be gated by a #ifdef ZTS preprocessor guard? As this function is both called in NTS and ZTS builds

[cheplv]

@Girgias No need - this is related to both NTS, ZTS modes - due copy is in CTOR so we must free in DTOR

php-src/Zend/zend_virtual_cwd.c

Line 143 in 4a8e591

CWD_STATE_COPY(&cwd_g->cwd, &main_cwd_state);