mbedtls: fix build with disabled proxy support

Don't reference fields that do not exist. Fixes build failure:

vtls/mbedtls.c: In function 'mbed_connect_step1':
vtls/mbedtls.c:249:54: error: 'struct connectdata' has no member named 'http_proxy'

Closes #5615

1 files changed, 10 insertions, 0 deletions

diff --git a/lib/vtls/mbedtls.c b/lib/vtls/mbedtls.c
index ba31b8e78..545f824c6 100644
--- a/lib/vtls/mbedtls.c
+++ b/lib/vtls/mbedtls.c
@@ -246,9 +246,14 @@ mbed_connect_step1(struct connectdata *conn,
   const char * const ssl_capath = SSL_CONN_CONFIG(CApath);
   char * const ssl_cert = SSL_SET_OPTION(cert);
   const char * const ssl_crlfile = SSL_SET_OPTION(CRLfile);
+#ifndef CURL_DISABLE_PROXY
   const char * const hostname = SSL_IS_PROXY() ? conn->http_proxy.host.name :
     conn->host.name;
   const long int port = SSL_IS_PROXY() ? conn->port : conn->remote_port;
+#else
+  const char * const hostname = conn->host.name;
+  const long int port = conn->remote_port;
+#endif
   int ret = -1;
   char errorbuf[128];
   errorbuf[0] = 0;
@@ -538,9 +543,14 @@ mbed_connect_step2(struct connectdata *conn,
   struct ssl_connect_data *connssl = &conn->ssl[sockindex];
   struct ssl_backend_data *backend = connssl->backend;
   const mbedtls_x509_crt *peercert;
+#ifndef CURL_DISABLE_PROXY
   const char * const pinnedpubkey = SSL_IS_PROXY() ?
     data->set.str[STRING_SSL_PINNEDPUBLICKEY_PROXY] :
     data->set.str[STRING_SSL_PINNEDPUBLICKEY_ORIG];
+#else
+  const char * const pinnedpubkey =
+    data->set.str[STRING_SSL_PINNEDPUBLICKEY_ORIG];
+#endif
 
   conn->recv[sockindex] = mbed_recv;
   conn->send[sockindex] = mbed_send;