94c0a5b Ensure error_string() never returns NULL

1 file Authored by sbose 13 years ago, Committed by sgallagh 13 years ago,
    Ensure error_string() never returns NULL
    
    A Coverity check indicated that ther are platforms where strerror() will
    return NULL for unknown, e.g. negative error numbers. Chances are that
    these platforms will have problems with NULL arguments to printf() too.
    
        
file modified
+12 -1