[BOLT] Fix for missing entry offset

Temporary fix for missing entry offset when creating address
translation tables (BAT) after D127935 landed. Will later work on
assigning a more reasonable offset different than zero.

Reviewed By: Amir

Differential Revision: https://reviews.llvm.org/D128092

bolt/lib/Passes/ValidateInternalCalls.cpp

@@ -106,6 +106,7 @@ bool ValidateInternalCalls::fixCFGForPIC(BinaryFunction &Function) const {
         // block.
         std::vector<std::unique_ptr<BinaryBasicBlock>> NewBBs;
         NewBBs.emplace_back(Function.createBasicBlock());
+        NewBBs.back()->setOffset(0);
         NewBBs.back()->addInstructions(MovedInsts.begin(), MovedInsts.end());
         BB.moveAllSuccessorsTo(NewBBs.back().get());
         Function.insertBasicBlocks(&BB, std::move(NewBBs));