url: reduce ssl backend count for CURL_DISABLE_PROXY builds

Closes #8212

diff --git a/lib/url.c b/lib/url.c
index 45b514c2b852d1714b7de34902200ab1c628237d..9f1013554f5defa9b98fe8bea1c06089473a109d 100644 (file)
--- a/lib/url.c
+++ b/lib/url.c
@@ -5,7 +5,7 @@
  *                            | (__| |_| |  _ <| |___
  *                             \___|\___/|_| \_\_____|
  *
- * Copyright (C) 1998 - 2021, Daniel Stenberg, <daniel@haxx.se>, et al.
+ * Copyright (C) 1998 - 2022, Daniel Stenberg, <daniel@haxx.se>, et al.
  *
  * This software is licensed as described in the file COPYING, which
  * you should have received as part of this distribution. The terms
@@ -137,6 +137,15 @@ bool curl_win32_idn_to_ascii(const char *in, char **out);
 #include "curl_memory.h"
 #include "memdebug.h"
 
+/* Count of the backend ssl objects to allocate */
+#ifdef USE_SSL
+#  ifndef CURL_DISABLE_PROXY
+#    define SSL_BACKEND_CNT 4
+#  else
+#    define SSL_BACKEND_CNT 2
+#  endif
+#endif
+
 static void conn_free(struct connectdata *conn);
 
 /* Some parts of the code (e.g. chunked encoding) assume this buffer has at
@@ -1682,7 +1691,7 @@ static struct connectdata *allocate_conn(struct Curl_easy *data)
      data becomes proxy backend data). */
   {
     size_t sslsize = Curl_ssl->sizeof_ssl_backend_data;
-    char *ssl = calloc(4, sslsize);
+    char *ssl = calloc(SSL_BACKEND_CNT, sslsize);
     if(!ssl) {
       free(conn);
       return NULL;