X86, MC: Tidy up some whitespace in GetRelocType

No functionality change intended.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@221443 91177308-0d34-0410-b5e6-96231b3b80d8
Object, COFF: Infer symbol sizes from adjacent symbols

Use the position of the subsequent symbol in the object file to infer
the size of it's predecessor.  I hope to eventually remove whatever COFF
specific details from this little algorithm so that we can unify this
logic with what Mach-O does.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@221444 91177308-0d34-0410-b5e6-96231b3b80d8