swift

5072b303 - [Serialization] Ignore missing potentially optional dependencies in getImportedModules

[Serialization] Ignore missing potentially optional dependencies in getImportedModules The service `ModuleFile::getImportedModules` is called after the dependency loading logic runs. We can trust this previous logic to have correctly loaded optional dependencies. In `getImportedModules` we can just ignore such missing dependencies. rdar://115372249