regcomp: sync from glibc: remove dead store

[pspp] / ChangeLog

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 2010-01-04  Jim Meyering  <meyering@redhat.com>
 
+       regcomp: sync from glibc: remove dead store
+       * lib/regcomp.c (duplicate_node_closure): Remove useless
+       search_duplicated_node call and dead store.
+
        regcomp: sync from glibc; always use nl_langinfo
        * lib/regcomp.c (init_dfa) [!LIBC]: Always use nl_langinfo (CODESET),
        now that gnulib provides it.  Recognize UTF8 as well as UTF-8.