Merging r285283:

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r285283 | achurbanov | 2016-10-27 06:43:07 -0500 (Thu, 27 Oct 2016) | 6 lines

Fixed a memory leak related to task dependencies.

Differential Revision: http://reviews.llvm.org/D25504

Patch by Alex Duran.

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llvm-svn: 287559