initiate variables properly to default to no auth for server and proxy

lib/http.c

@@ -207,8 +207,8 @@ static bool pickoneauth(struct auth *pick)
 CURLcode Curl_http_auth_act(struct connectdata *conn)
 {
   struct SessionHandle *data = conn->data;
-  bool pickhost;
-  bool pickproxy;
+  bool pickhost = FALSE;
+  bool pickproxy = FALSE;
   CURLcode code = CURLE_OK;
 
   if(data->state.authproblem)