Fix build when setting medium-ieee802154 but not proto-sixlowpan.

Dirbaio · Dirbaio · commit bc2934d62c03 · 2021-10-21T01:42:18.000+02:00
diff --git a/Cargo.toml b/Cargo.toml
@@ -37,7 +37,7 @@ verbose = []
 rand-custom-impl = []
 "medium-ethernet" = ["socket"]
 "medium-ip" = ["socket"]
-"medium-ieee802154" = ["socket"]
+"medium-ieee802154" = ["socket", "proto-sixlowpan"]
 
 "phy-raw_socket" = ["std", "libc"]
 "phy-tuntap_interface" = ["std", "libc", "medium-ethernet"]
