Bug 510484 - Restore the recursion protection set in CPPVariable.getInitialValue()

The set was moved to EvalUtil.getVariableValue() in bug 508254, but this
left some paths unprotected. This restores the set to
CPPVariable.getInitialValue() (while keeping the EvalUtil one too).

Change-Id: I4a579720f4bc23d41e50c484649a73c29698373d
2 files changed