do not call LayoutEngine::reset()
Calling reset() disposes everything the LayoutEngine knows in its current state. While this may have prevented some obscure crash during exit in the past (call was added 2003-03-27), it definitely leads to a crash if the updated LayoutEngine "patch" http://download.icu-project.org/files/icu4c/51.1/icu-51-layout-fix-10107.tgz is applied as that sets fGlyphStorage=NULL (it doesn't delete LEGlyphStorage though and thus may leak, but that patch is in the wild now) and a later call to mpIcuLE->layoutChars() tries to access fGlyphStorage->...() if mpIcuLE is reused. For the patch mentioned see http://site.icu-project.org/download/51#TOC-Known-Issues and http://bugs.icu-project.org/trac/ticket/10107 Change-Id: I1b8f5c446c174d7d12b896b3ecd2a266645e8abc
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