Just iterate the DwarfCompileUnits rather than trying to filter them out of the list of all units.
Just iterate the DwarfCompileUnits rather than trying to filter them out of the list of all units.

git-svn-id: 0ff597fd157e6f4fc38580e8d64ab130330d2411@221034 91177308-0d34-0410-b5e6-96231b3b80d8

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