Description:
------------
Under Windows if php fail to load an extension apache crash.

Looking at code I discovered that php_win_err is wrong (I don't know if this fix my problem).

In win32/winutil.c

PHPAPI char *php_win_err(int error)
{
        char *buf = NULL;

        FormatMessage(
                FORMAT_MESSAGE_ALLOCATE_BUFFER | FORMAT_MESSAGE_FROM_SYSTEM |   FORMAT_MESSAGE_IGNORE_INSERTS,
                NULL, error, MAKELANGID(LANG_NEUTRAL, SUBLANG_DEFAULT), (LPTSTR)&buf, 0, NULL
        );

        return (buf ? (char *) buf : "");
}

now if FormatMessage fails buf is NULL and a "" is returned however in ext/standard/dl.c a LocalFree is called if err (php_win_err result) is not NULL.

Expected result:
----------------
Program should report error and not crash