Fix a little thinko in r226017 - the code to actually add the demangled name to the Mangled object got  moved into the #else branch of the #if/#elif/#endif, so it wasn't getting done in the #if case anymore.
Fix a little thinko in r226017 - the code to actually add the demangled name to the Mangled object got 
moved into the #else branch of the #if/#elif/#endif, so it wasn't getting done in the #if case anymore.

Keep the code to add the demangled name outside of the #if, and then just free the demangled_name
and set it back to NULL in the Windows case.

<rdar://problem/19479499>


git-svn-id: 4c4cc70b1ef44ba2b7963015e681894188cea27e@226088 91177308-0d34-0410-b5e6-96231b3b80d8

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