[PATCH 3/4] widl: Fix detection of non-pointer context handles.

[Robert Shearman]

is_ptr cannot be used because it follows the chain of types into the 
type which has the context_handle attribute, which is typically "void *" 
and so causes these context handles to be incorrectly detected as 
context handles. Instead, we can use is_aliaschain_ptr to follow the 
chain of aliases without following pointers and the absence of the 
context_handle attribute indicates that it must be present on a type 
after following a pointer.
---
  tools/widl/client.c  |    8 ++++++--
  tools/widl/server.c  |    6 +++++-
  tools/widl/typegen.c |    6 +++++-
  3 files changed, 16 insertions(+), 4 deletions(-)
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