Fix windows thread stop code

The windows thread stop code was erroneously not just deleting the thread
local variable on thread stop, but also deleting the thread local *key*
(thus removing thread local data for *all* threads in one go!).

Reviewed-by: Rich Salz <rsalz@openssl.org>
diff --git a/crypto/init.c b/crypto/init.c
index 8775b82..cbe07df 100644
--- a/crypto/init.c
+++ b/crypto/init.c
@@ -506,7 +506,6 @@
     }
 
     OPENSSL_free(locals);
-    ossl_init_thread_stop_cleanup();
 }
 
 void OPENSSL_thread_stop(void)
@@ -599,6 +598,8 @@
         ERR_free_strings();
     }
 
+    ossl_init_thread_stop_cleanup();
+
 #ifdef OPENSSL_INIT_DEBUG
     fprintf(stderr, "OPENSSL_INIT: OPENSSL_INIT_library_stop: "
                     "CRYPTO_cleanup_all_ex_data()\n");