Replace tabs with spaces in posixmodule.c

diff --cc Modules/posixmodule.c
index 0fe3963d1819ea5fea44ea2837a7225afc75978e,d4982f027161eb803d59c45247c6e82c9aa8f69c..69d5229068ca79624722b474751973d12cdf8b72
--- 1/Modules/posixmodule.c
--- 2/Modules/posixmodule.c
+++ b/Modules/posixmodule.c
@@@ -2442,7 -2568,9 +2442,7 @@@ posix_chdir(PyObject *self, PyObject *a
          result = win32_wchdir(path.wide);
      else
          result = win32_chdir(path.narrow);
-       result = !result; /* on unix, success = 0, on windows, success = !0 */
+     result = !result; /* on unix, success = 0, on windows, success = !0 */
 -#elif defined(PYOS_OS2) && defined(PYCC_GCC)
 -    result = _chdir2(path.narrow);
  #else
  #ifdef HAVE_FCHDIR
      if (path.fd != -1)