cgi: close unforked std fds

diff --git a/lib/libwebsockets.c b/lib/libwebsockets.c
index 11f73d5..288c3df 100755 (executable)
--- a/lib/libwebsockets.c
+++ b/lib/libwebsockets.c
@@ -2506,11 +2506,13 @@ lws_cgi(struct lws *wsi, const char * const *exec_array, int script_uri_path_len
         * process is OK.  Stuff that happens after the execvpe() is OK.
         */
 
-       for (n = 0; n < 3; n++)
+       for (n = 0; n < 3; n++) {
                if (dup2(cgi->pipe_fds[n][!(n == 0)], n) < 0) {
                        lwsl_err("%s: stdin dup2 failed\n", __func__);
                        goto bail3;
                }
+               close(cgi->pipe_fds[n][!(n == 0)]);
+       }
 
 #if !defined(LWS_HAVE_VFORK) || !defined(LWS_HAVE_EXECVPE)
        for (m = 0; m < n; m++) {