Fix MacOS/X build warnings

Commit 7823d792d0 added DEFINE_LHASH_OF
to a C source file.  DEFINE_LHASH_OF() and DEFINE_STACK_OF() must
be used only in header files to avoid clang warnings for unused
static-inline functions.

Reviewed-by: Rich Salz <rsalz@openssl.org>

ssl/ssl_cert.c

@@ -647,8 +647,6 @@ static unsigned long xname_hash(const X509_NAME *a)
     return X509_NAME_hash((X509_NAME *)a);
 }
 
-DEFINE_LHASH_OF(X509_NAME);
-
 /**
  * Load CA certs from a file into a ::STACK. Note that it is somewhat misnamed;
  * it doesn't really have anything to do with clients (except that a common use

ssl/ssl_locl.h

@@ -685,7 +685,8 @@ struct ssl_comp_st {
 };
 
 DEFINE_LHASH_OF(SSL_SESSION);
-
+/* Needed in ssl_cert.c */
+DEFINE_LHASH_OF(X509_NAME);
 
 struct ssl_ctx_st {
     const SSL_METHOD *method;