[TLS] set r->uri.authority empty str upon accept()

ensure not NULL for error messages

src/mod_gnutls.c

@@ -2517,6 +2517,7 @@ CONNECTION_FUNC(mod_gnutls_handle_con_accept)
     hctx->tmp_buf = con->srv->tmp_buf;
     hctx->errh = r->conf.errh;
     con->plugin_ctx[p->id] = hctx;
+    buffer_string_set_length(&r->uri.authority, 0);
 
     plugin_ssl_ctx * const s = p->ssl_ctxs + srv_sock->sidx;
     hctx->ssl_session_ticket = s->ssl_session_ticket;

src/mod_mbedtls.c

@@ -2029,6 +2029,7 @@ CONNECTION_FUNC(mod_mbedtls_handle_con_accept)
     hctx->tmp_buf = con->srv->tmp_buf;
     hctx->errh = r->conf.errh;
     con->plugin_ctx[p->id] = hctx;
+    buffer_string_set_length(&r->uri.authority, 0);
 
     plugin_ssl_ctx * const s = p->ssl_ctxs + srv_sock->sidx;
     mbedtls_ssl_init(&hctx->ssl);

src/mod_nss.c

@@ -2258,6 +2258,7 @@ CONNECTION_FUNC(mod_nss_handle_con_accept)
     hctx->tmp_buf = con->srv->tmp_buf;
     hctx->errh = r->conf.errh;
     con->plugin_ctx[p->id] = hctx;
+    buffer_string_set_length(&r->uri.authority, 0);
 
     plugin_ssl_ctx * const s = p->ssl_ctxs + srv_sock->sidx;
     hctx->ssl_session_ticket = s->ssl_session_ticket;

src/mod_openssl.c

@@ -3122,6 +3122,7 @@ CONNECTION_FUNC(mod_openssl_handle_con_accept)
     hctx->tmp_buf = con->srv->tmp_buf;
     hctx->errh = r->conf.errh;
     con->plugin_ctx[p->id] = hctx;
+    buffer_string_set_length(&r->uri.authority, 0);
 
     plugin_ssl_ctx * const s = p->ssl_ctxs + srv_sock->sidx;
     hctx->ssl = SSL_new(s->ssl_ctx);

src/mod_wolfssl.c

@@ -2942,6 +2942,7 @@ CONNECTION_FUNC(mod_openssl_handle_con_accept)
     hctx->tmp_buf = con->srv->tmp_buf;
     hctx->errh = r->conf.errh;
     con->plugin_ctx[p->id] = hctx;
+    buffer_string_set_length(&r->uri.authority, 0);
 
     plugin_ssl_ctx * const s = p->ssl_ctxs + srv_sock->sidx;
     hctx->ssl = SSL_new(s->ssl_ctx);