Fixed a thinko when returning a struct like {short a; short b; short c; float d}.
Fixed a thinko when returning a struct like {short a; short b; short c; float d}.

git-svn-id: 4c4cc70b1ef44ba2b7963015e681894188cea27e@147209 91177308-0d34-0410-b5e6-96231b3b80d8

apple/swift-lldb,apple/swift-lldb,apple/swift-lldb,apple/swift-lldb,llvm-mirror/lldb,llvm-mirror/lldb,apple/swift-lldb,llvm-mirror/lldb,apple/swift-lldb,llvm-mirror/lldb,llvm-mirror/lldb