tree c692bf79d815f84be8d798119347ca86dbc16b79
parent c494899c17d481a019fb6aaa5b8191231f19768e
author Brion Vibber <brion@pobox.com> 1594525480 -0700
committer GitHub <noreply@github.com> 1594525480 -0700
gpgsig -----BEGIN PGP SIGNATURE-----
 
 wsBcBAABCAAQBQJfCocoCRBK7hj4Ov3rIwAAdHIIAIoy/i+TASPPtmuPVRF2275x
 XNpZCcZdYLdPC/k4f58wdZmnu9BRwMDLFKsPr+4IhFcUHmDV8YDCBWLuVwAq+1NF
 /DJq05+xBYTOyjEWGm7gPBNUa9BPvz+1dSMziiFCZ8OCeh2jJpADgLhS415zQbeC
 QDvShK5989GuQcZ8Pz9+ZPpXEQ3bIWuZUjKaddGFyu/qVnQyFtIwvqYfMvSf291V
 czQ6x6SnStcRf1FHUybsVbTwPzgw9EWa5haDx5QpxlltDaN11TUG23ERN7bay5/G
 gOg13EOUnepZp9+hU+IeDURzgKgjNF9vj3vkvT6Wd1n+yOcoBXSGoxNeN1pJWQA=
 =w/Oj
 -----END PGP SIGNATURE-----
 

Fix fatal exception in "emsdk list" on unsupported platforms (#549)

On platforms with no supported binary SDKs to download, find_sdk
can return None which caused a check in the "list" command to fail.
Checking for the return value before making method calls fixes this,
and allows Linux/ARM64 to run "emsdk list" and then build an SDK
from source.

Fixes https://github.com/emscripten-core/emsdk/issues/548