Just to use consistent patches between the builds. It was previously guarded by `WASM`, but it was a dead code - `OpenCOLLADA` is skipped on wasm, so it was never exercised.
Regarding the "specializing std::hash outside of the std:: namespace" issue on gcc - it was caused by patch missing fixes for `COLLADABU_HASH_NAMESPACE_OPEN` and `COLLADABU_HASH_NAMESPACE_CLOSE`. So in theory it should have also result in an error in clang or in an invalid code/ub. Either way, now it's fixed.
Andrej730