[PATCH for-4.21?] xl: drop redundant return value check from list_domains_details()

[Jan Beulich]

The check that was added to address a Coverity report renderned another,
later check dead, which Coverity again complains about.

Fixes: d0193c6d6716 ("tools/xl: check return value of printf_info_one_json() in 
list_domains_details()")
Coverity ID: 1667251
Signed-off-by: Jan Beulich <jbeul...@suse.com>

--- a/tools/xl/xl_info.c
+++ b/tools/xl/xl_info.c
@@ -593,10 +593,7 @@ static void list_domains_details(const l
         } else
             printf_info_sexp(info[i].domid, &d_config, stdout);
         libxl_domain_config_dispose(&d_config);
-#ifdef HAVE_LIBJSONC
-        if (rc)
-            goto out;
-#elif defined(HAVE_LIBYAJL)
+#ifdef HAVE_LIBYAJL
         if (s != yajl_gen_status_ok)
             goto out;
 #endif