Fixed a flipped conditional when writing back the values of variables in the Materializer.
Fixed a flipped conditional when writing back the
values of variables in the Materializer.

The Materializer should not write the variable
back if its new value is the *same* as the old
value, not if the new value is *different*.

<rdar://problem/16712205>


git-svn-id: 4c4cc70b1ef44ba2b7963015e681894188cea27e@207148 91177308-0d34-0410-b5e6-96231b3b80d8

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