[PATCH] comctl32: Set focus in edit box of IP Address controls.

[katahiromz]

IP Address controls (SysIPAddress32) should set focus to the edit box
upon WM_SETFOCUS.

Wine-Bug: https://bugs.winehq.org/show_bug.cgi?id=49924
Signed-off-by: Hirofumi Katayama <katayama.hirofumi.mz at gmail.com>
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https://github.com/reactos/reactos/commit/0733d96d9d90337c9c0537c0406650c9aa429ab7
https://jira.reactos.org/browse/CORE-3479