[PATCH] [lld] Fix heap-buffer-overflow bugs identified by the Address Sanitizer

[Kostya Serebryany]

In http://reviews.llvm.org/D7733#126132, @garious wrote:

> To my knowledge, there isn't an ASan bot for LLD.


Would you like to add lld testing to http://lab.llvm.org:8011/builders/sanitizer-x86_64-linux-fast/? 
If yes, change zorg/buildbot/builders/sanitizers/buildbot_fast.sh and send review to Sergey Matveev <earthdok at google.com>


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http://reviews.llvm.org/D7733

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