30d0f7be6e rpc: Fix for segfault if combinepsbt called with empty inputs (benthecarman)
Pull request description:
Fixes#15300
Tree-SHA512: 25e7b4e6e48d8b0d197f0ab96df308fff33e2110f8929cb48914877fa7f4c4a84f173b1378fdb2dec5d03fe7d6d1aced4b577e55f9fe180d8147d9106ebf543f
88a79cb436b30b39d37d139da723f5a31e9d161b fix converttopsbt permitsigdata arg, add basic test (Gregory Sanders)
Pull request description:
The final check for extraneous sigdata has a flipped boolean, resulting in incorrect behavior.
Resolves https://github.com/bitcoin/bitcoin/issues/14355
Tree-SHA512: 5157a74b8ddebd7d836fba96765c4d7ed15a73d4289817353d3566a0f6803bd4bbc3f936735c517c7a83a6cbdb4052b9c61d23f6cc4ad00a6077278cd51adbd4