replaceCommand and addCommandList crash blink from time to time

[yury]

Spotted in crashlogs from App Store.

iOS 11,12
devices: iPhone, iPad

[holzschu]

Interesting. If I read that correctly, the issue comes from CFDictionaryCreateMutableCopy. I'm going to have a look, but I don't think this command is supposed to crash.

[holzschu]

I think the last line of replaceCommand should be:

commandList = [mutableDict copy];

instead of:

commandList = [mutableDict mutableCopy];

See commit ea25d0e.