Fixed: [CLI crash if error-info is empty #134](#134)

CHANGELOG.md

@@ -38,6 +38,7 @@ Users may have to change how they access the system
 
 ### Corrected Bugs
 
+* Fixed: [CLI crash if error-info is empty #134](https://github.com/clicon/clixon/issues/134)
 * Fixed: [Cannot create or modify NACM data node access rule with path using JSON encoding #129](https://github.com/clicon/clixon/issues/129). The evaluation of NACM datanode rule path is assumed to be canonical namespace and cannot be overruled with `xmlns` rules.
 * Corrected error message for list min/max-value to comply to RFC 7950: a proper path is now returned, previously only the final list symbol was returned. This error-path is also now exposed in the CLI error message correctly.
   * Example: `<error-path>/c/a1</error-path>`

lib/src/clixon_netconf_lib.c

@@ -1396,7 +1396,8 @@ netconf_err2cb(cxobj *xerr,
 	cprintf(cberr, "%s ", xml_body(x));
     if ((x=xpath_first(xerr, NULL, "//error-message"))!=NULL)
 	cprintf(cberr, "%s ", xml_body(x));
-    if ((x=xpath_first(xerr, NULL, "//error-info"))!=NULL)
+    if ((x=xpath_first(xerr, NULL, "//error-info"))!=NULL &&
+	xml_child_nr(x) > 0)
 	clicon_xml2cbuf(cberr, xml_child_i(x,0), 0, 0, -1);
     if ((x=xpath_first(xerr, NULL, "//error-app-tag"))!=NULL)
 	cprintf(cberr, ": %s ", xml_body(x));