Fix processHeapClosureForDead CONSTR_NOCAF case
CONSTR_NOCAF was introduced with 55d535da as a replacement for CONSTR_STATIC and CONSTR_NOCAF_STATIC, however, as explained in Note [static constructors], we copy CONSTR_NOCAFs (which can also be seen in evacuate) during GC, and they can become dead, like other CONSTR_X_Ys. processHeapClosureForDead is updated to reflect this. Test Plan: Validates on x86_64. Existing failures on i386. Reviewers: simonmar, bgamari, erikd Reviewed By: simonmar, bgamari Subscribers: rwbarton, thomie, carter GHC Trac Issues: #7836, #15063, #15087, #15165 Differential Revision: https://phabricator.haskell.org/D4928 (cherry picked from commit 2625f131)
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