<rdar://problem/15960553>

Fix a bug where calling SBFrame::FindValue() would cause a copy of all variables in the block to be inserted in the frame's variable list, regardless of whether those same variables were there or not - which means one could end up with a frame with lots of duplicate copies of the same variables



git-svn-id: https://llvm.org/svn/llvm-project/lldb/trunk@201614 91177308-0d34-0410-b5e6-96231b3b80d8