[cfe-commits] [PATCH] Fix ParenListExpr with null type

[Manuel Klimek]

The attached patch
- fixes the introduction of null types for ParenListExpr's that end up
in the AST for explicit initializers by making the constructor of
ParenListExpr take a type (as suggested by dgregor on irc)
- gets rid of some code I assume is dead (tested by running the tests
and by running it over all of our internal C++ code without hitting
any of those asserts - and by my inability to come up with an example
that hits that code path (which admittedly doesn't mean a lot))
- tested that the other in-use cases that create ParenListExpr's
without a type don't lead to them being in the AST in the end

Rietveld link:
http://codereview.appspot.com/4584059/

Cheers,
/Manuel
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