Make the BIO_ADDR param optional.

Reviewed-by: NRichard Levitte <levitte@openssl.org>

crypto/bio/b_sock.c

@@ -316,16 +316,10 @@ int BIO_get_accept_socket(char *host, int bind_mode)
 
 int BIO_accept(int sock, char **ip_port)
 {
-    BIO_ADDR *res = BIO_ADDR_new();
+    BIO_ADDR res;
     int ret = -1;
 
-    if (res == NULL) {
-        BIOerr(BIO_F_BIO_ACCEPT, ERR_R_MALLOC_FAILURE);
-        return ret;
-    }
-
-    ret = BIO_accept_ex(sock, res, 0);
-
+    ret = BIO_accept_ex(sock, &res, 0);
     if (ret == (int)INVALID_SOCKET) {
         if (BIO_sock_should_retry(ret)) {
             ret = -2;
@@ -337,8 +331,8 @@ int BIO_accept(int sock, char **ip_port)
     }
 
     if (ip_port != NULL) {
-        char *host = BIO_ADDR_hostname_string(res, 1);
-        char *port = BIO_ADDR_service_string(res, 1);
+        char *host = BIO_ADDR_hostname_string(&res, 1);
+        char *port = BIO_ADDR_service_string(&res, 1);
         *ip_port = OPENSSL_zalloc(strlen(host) + strlen(port) + 2);
         strcpy(*ip_port, host);
         strcat(*ip_port, ":");
@@ -348,7 +342,6 @@ int BIO_accept(int sock, char **ip_port)
     }
 
  end:
-    BIO_ADDR_free(res);
     return ret;
 }
 # endif

crypto/bio/b_sock2.c

@@ -274,10 +274,12 @@ int BIO_listen(int sock, const BIO_ADDR *addr, int options)
  * @options: BIO socket options, applied on the accepted socket.
  *
  */
-int BIO_accept_ex(int accept_sock, BIO_ADDR *addr, int options)
+int BIO_accept_ex(int accept_sock, BIO_ADDR *addr_, int options)
 {
     socklen_t len;
     int accepted_sock;
+    BIO_ADDR locaddr;
+    BIO_ADDR *addr = addr_ == NULL ? &locaddr : addr_;
 
     len = sizeof(*addr);
     accepted_sock = accept(accept_sock,