Valentina produces empty rotation operation.

[Roman Telezhynskyi]

Way to reproduce:

1. Select point.
2. Press enter.
3. Select the same point as origin.
4. Finish creating.

Because of optimization for user who mistakenly select origin point as part of list Valentina remove it from the list. If list contains only one object rotation becomes empty.

[Roman Telezhynskyi]

Fixed issue #954. Valentina produces empty rotation operation. (grafted from 0108ef767e2447e5b5f39378bcf245e25947a25d)

→ <<cset 4646564f5fe0>>