[RuntimeDyld] Fix conservative over-allocation of memory for common symbols.

The previous allocation code was over-estimating the amount of memory required.

No test case: we don't currently have a good way to detect conervative
over-allocation.



git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@267041 91177308-0d34-0410-b5e6-96231b3b80d8
1 file changed