server: KeyNameInformation returns the full name of the key. (try 2)

[Akihiro Sagawa]

Try 2:
  - Use `for' loops instead of `while' loops in get_key_full_name function.
  - Introduce full_name variable to avoid tricky free() condition check at
end of enum_key function.

---
 dlls/ntdll/tests/reg.c |  2 +-
 server/registry.c      | 40 +++++++++++++++++++++++++++++++++++++---
 2 files changed, 38 insertions(+), 4 deletions(-)

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