Fix unused variable warnings

Motivation:
Some compilers complain if variables are not used

Modifications:
Remove an unused variable, and explicitly ignore another in case it isn't used.

Result:
Easier compilation time.

openssl-dynamic/src/main/c/sslcontext.c

@@ -1632,7 +1632,6 @@ static jobjectArray principalBytes(JNIEnv* e, const STACK_OF(X509_NAME)* names)
  */
 static int cert_requested(SSL* ssl, X509** x509Out, EVP_PKEY** pkeyOut) {
     tcn_ssl_ctxt_t *c = SSL_get_app_data2(ssl);
-    char ssl2_ctype = SSL3_CT_RSA_SIGN;
     int ctype_num;
     jbyte* ctype_bytes;
     jobjectArray issuers;
@@ -1647,6 +1646,7 @@ static int cert_requested(SSL* ssl, X509** x509Out, EVP_PKEY** pkeyOut) {
     *pkeyOut = NULL;
 
 #if !defined(OPENSSL_IS_BORINGSSL) && (OPENSSL_VERSION_NUMBER < 0x1000200fL || LIBRESSL_VERSION_NUMBER < 0x20400000L)
+    char ssl2_ctype = SSL3_CT_RSA_SIGN;
     switch (ssl->version) {
         case SSL2_VERSION:
             ctype_bytes = (jbyte*) &ssl2_ctype;

openssl-dynamic/src/main/c/sslutils.c

@@ -602,7 +602,6 @@ int SSL_use_certificate_chain_bio(SSL *ssl, BIO *bio,
     X509 *x509;
     unsigned long err;
     int n;
-    STACK_OF(X509) *chain;
 
     /* optionally skip a leading server certificate */
     if (skipfirst) {