Reinsert usings for OString and OUString

[gerhard öttl (via_Code_Review)]

gerhard öttl has abandoned this change.

Change subject: Reinsert usings for OString and OUString
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Patch Set 1: Abandoned

Cannot reproduce the failure that lead me to that patch on another machine. So it is of no use.

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Gerrit-MessageType: abandon
Gerrit-Change-Id: Icb304d1a0617114653d3ce7f3f64708a1d26eb2d
Gerrit-PatchSet: 1
Gerrit-Project: core
Gerrit-Branch: master
Gerrit-Owner: gerhard öttl <lodev at ogersoft.at>
Gerrit-Reviewer: Miklos Vajna <vmiklos at suse.cz>