Regression: Failure to use correct namespace macros

[barretpj]

This has been broken, yet again.

I have to build with custom namespaces, so my openexr CMAKE_OPT has
-DOPENEXR_IMF_NAMESPACE=FL_Imf -DILMTHREAD_NAMESPACE=FL_IlmThread -DIEX_NAMESPACE=FL_Iex

Here's a patch against 3.3.1 that tidies it up.
namespace_patch.txt

(patch updated from original as I caught another one in website)

[cary-ilm]

Sorry about that, and thanks for the catch and the patch. We'll get the fix into the next release.

Our CI checks (and most of the code we commonly work on) don't currently validate the custom namespace feature, an oversight. We'll add that shortly, which should hopefully avoid this in the future.