multifundchannel reserves funds before the opening transaction is confirmed to work

[Rassah]

Issue and Steps to Reproduce

running lightning-cli multifundchannel with an array of channels to open sets funds that would be used for these channels as "reserved"

The problem is that if the opening channels function fails, where for whatever reason it locks up or is reset while trying to open the channels, the funds stay reserved, for about two weeks. The channels may be showing as opening, but there is no Funding Transaction ID, as the actual transaction to open the channels never gets created or broadcast. It could even happen twice in a row, locking up all available funds for weeks. And since there's no transaction, there's no way to "unreserve" the funds either.

Ideally the funds would be reserved AFTER the transaction is created, broadcast, and verified that it was broadcast.

Example of what was entered to cause it to lock up and reserve funds:
lightning-cli multifundchannel '[{"id":"02187352cc4b1856b9604e0a79e1bc9b301be7e0c14acbbb8c29f7051d507127d7@pw2pzwaf6dqs6ew6iysjsagew3fhryjuuuingef6qolxqeo7bmgzhbqd.onion:9735", "amount":"10000000"}, {"id":"026165850492521f4ac8abd9bd8088123446d126f648ca35e60f88177dc149ceb2@45.86.229.190:9735", "amount":"10000000"}, {"id":"024bfaf0cabe7f874fd33ebf7c6f4e5385971fc504ef3f492432e9e3ec77e1b5cf@52.1.72.207:9735", "amount":"5000000"}, {"id":"033b63e4a9931dc151037acbce12f4f8968c86f5655cf102bbfa85a26bd4adc6d9@137.184.131.175:9735", "amount":"10000000"}]' 40000perkb

[Rassah]

Now that the funds from a prior attempt got unreleased, I tried it again. This was the command
lightning-cli multifundchannel '[{"id":"026165850492521f4ac8abd9bd8088123446d126f648ca35e60f88177dc149ceb2@45.86.229.190:9735", "amount":"10000000"}, {"id":"03d607f3e69fd032524a867b288216bfab263b6eaee4e07783799a6fe69bb84fac@54.155.41.207:9735", "amount":"5000000"}, {"id":"024bfaf0cabe7f874fd33ebf7c6f4e5385971fc504ef3f492432e9e3ec77e1b5cf@52.1.72.207:9735", "amount":"5000000"}, {"id":"033b63e4a9931dc151037acbce12f4f8968c86f5655cf102bbfa85a26bd4adc6d9@137.184.131.175:9735", "amount":"10000000"}, {"id":"0298f6074a454a1f5345cb2a7c6f9fce206cd0bf675d177cdbf0ca7508dd28852f@174.169.193.33:9735", "amount":"10000000"}, {"id":"031c7ecff228dfe6054307ee49c8616998af5f8d4436f13c07d211aeb6c0ec87f7@108.49.141.214:9735", "amount":"10000000"}]' 40000perkb

This time I even made sure to successfully connect to all the peers beforehand. Again, it ended up just sitting there with no error messages, and all these funds are "reserved."

Until this is fixed, multifundchannel should be considered broken.

[Rassah]

Tested multifundchannel again. When I run

lightning-cli listpeerchannels [id]

with is of the nodes I'm establishing channels with, some of them come back with

"status": [
"Funding channel start: offered, now waiting for accept_channel"

and that's where it gets stuck in perpetuity sometimes.

But, seems if I do

lightning-cli disconnect id

on the channels that are stuck waiting, multifundchannel gets unstuck and kicks out with an error, unreserving the funds. I can then remove the troublesome channels to try again, and without those it works.