Was originally reported in Blender Chat about Cycles standalone
that it will crash when the wrong OCIO configuration path was provided.
More gracefully handle this situation and log a warning instead,
similar to the handling of missing color spaces in the configuration.
The OCIO configuration access could raise an exception when, for example,
the file is missing:
```
ConstConfigRcPtr Config::CreateFromFile(const char * filename)
{
if (!filename || !*filename)
{
throw ExceptionMissingFile ("The config filepath is missing.");
}
...
```
Pull Request: https://projects.blender.org/blender/blender/pulls/132479
ba4bebd087