Revert "[SCCP] Fix mem-sanitizer failure introduced by r315288."
Revert "[SCCP] Fix mem-sanitizer failure introduced by r315288."

This reverts commit r315294. Part of fixing seg fault introduced in:
http://green.lab.llvm.org/green/job/clang-stage2-configure-Rlto/21675/

git-svn-id: 0ff597fd157e6f4fc38580e8d64ab130330d2411@315328 91177308-0d34-0410-b5e6-96231b3b80d8

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