[PECOFF] Fix delay-import address table contents.

Each entry in the delay-import address table had a wrong alignment
requirement if 32 bit. As a result it got wrong delay-import table.

Because llvm-readobj doesn't print out that field, we don't have a
test for that. I'll submit a test that would catch this bug after
improving llvm-readobj.

git-svn-id: https://llvm.org/svn/llvm-project/lld/trunk@221853 91177308-0d34-0410-b5e6-96231b3b80d8