Ruby

crypt.h: remove initialized

• missing/crypt.h (struct crypt_data): remove unnecessary member
  "initialized".
• missing/crypt.c (des_setkey_r): nothing to be initialized in
  crypt_data.
• configure.in (struct crypt_data): check for "initialized" in
  struct crypt_data, which may be only in glibc, and isn't on AIX
  at least.

git-svn-id: svn+ssh://ci.ruby-lang.org/ruby/trunk@55272 b2dd03c8-39d4-4d8f-98ff-823fe69b080e