Review Request: Fix some memory leaks in the Fonts Installer KCM

[Darío Andrés]

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http://reviewboard.kde.org/r/1567/
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Review request for kdelibs.


Summary
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I'm not confident about this one (about the Fc* function calls), and as I don't know if this KCM has a current maintainer to ping, I'm leaving the patch here to discuss. 


Diffs
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  svn://anonsvn.kde.org/home/kde/trunk/KDE/kdebase/workspace/kcontrol/kfontinst/lib/FcEngine.h 1021986 
  svn://anonsvn.kde.org/home/kde/trunk/KDE/kdebase/workspace/kcontrol/kfontinst/lib/FcEngine.cpp 1021986 
  svn://anonsvn.kde.org/home/kde/trunk/KDE/kdebase/workspace/kcontrol/kfontinst/viewpart/FontPreview.cpp 1021986 
  svn://anonsvn.kde.org/home/kde/trunk/KDE/kdebase/workspace/kcontrol/kfontinst/kcmfontinst/FontFilterProxyStyle.cpp 1021986 

Diff: http://reviewboard.kde.org/r/1567/diff


Testing
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It fixes several memory leaks easily found running the KCM using valgrind. 


Thanks,

Darío