D9120: Fix a memory leak

[Jaime Torres Amate]

jtamate added a comment.


  As I understand the problem, the reference was created (as a pointer) in setupForDomain, but was stored in a local reference in format (line 1221).
  As I'm not sure about the lifetime of the reference, I just delete it in the destructor.

REPOSITORY
  R249 KI18n

REVISION DETAIL
  https://phabricator.kde.org/D9120

To: jtamate, #frameworks
Cc: apol
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