Commit [r5513] Maximize Restore History

Close memory hole in uXML tree. Additionally remove NULL pointer compare before calling free. The standard explicitly allows free(NULL). Should be done everywhere and to save us a few bytes.

haraldkipp 2014-01-07

changed /trunk/nut/pro/uxmltree.c
/trunk/nut/pro/uxmltree.c Diff Switch to side-by-side view
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