[PATCH] [Sanitizer RT] Put the module name string ownership in Symbolizer in order

[Timur Iskhodzhanov]

> Timur, please make sure that (after this goes in) you audit the calls to Symbolizer::GetModuleNameAndOffsetForPC() and Symbolizer::GetModuleNameForPc() and remove internal_strdup() that could encounter at call sites: now we don't have to take ownership of these strings, as they are always owned by the Symbolizer.


I think I've already done it, but will double-check before committing when everything else is OK.


http://reviews.llvm.org/D8666

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