[llvm-cxxdump] Correctly process relocations when given multiple files

Archive files wouldn't lead to us reprocessing the section relocations
for the new object files.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@244932 91177308-0d34-0410-b5e6-96231b3b80d8
1 file changed