00f58f8c48db05dce9dceed73a0028482e037f0f rpc: Avoid locking cs_main in some wallet RPC (João Barbosa)
Pull request description:
Avoid locking `cs_main` in the folllowing wallet RPC: - `decoderawtransaction` - `getnewaddress` - `getrawchangeaddress` - `setlabel`
Tree-SHA512: 54089766b2a969a17479af6c60e8ce151fac1f8cec268d43c61e679d5d17e76d17e414240c9ca2bfd280165f3a04e24a51310eb283591cd601a7eebc8b2423ea
Backport of Core PR12559
https://github.com/bitcoin/bitcoin/pull/12559/