fix crash: CoinControl "space" bug #5700

1. 
   fsb4000 commented at 2:14 PM on January 23, 2015: contributor

   Bug description:

   1. Run Bitcoin-Qt
   2. Open CoinControl
   3. Click mouse here(Don't select any input)
   4. Press "space"
   5. Result

   Fix: this->currentItem() returns the current item in the tree widget and NULL if no selected items. So we don't try setCheckState for NULL.

   As https://github.com/novacoin-project/novacoin/commit/baf80c26a2e7f1ba6061d63d174eff0a09111e6f https://github.com/novacoin-project/novacoin/pull/120

2. fix crash: CoinControl "space" bug

   Just like https://github.com/novacoin-project/novacoin/commit/baf80c26a2e7f1ba6061d63d174eff0a09111e6f

   0eade74c78
3. 
   fanquake commented at 2:31 PM on January 23, 2015: member

   Recreated the bug, and the provided patch does indeed fix the behaviour. ACK

4. 
   jonasschnelli commented at 3:03 PM on January 23, 2015: contributor

   Tested. ACK. Binaries: https://bitcoin.jonasschnelli.ch/pulls/5700/

5. 
   laanwj commented at 3:06 PM on January 23, 2015: member

   Thanks, good catch

6. laanwj added this to the milestone 0.10.0 on Jan 23, 2015
7. laanwj added the label GUI on Jan 23, 2015
8. laanwj added the label Priority High on Jan 23, 2015
9. laanwj merged this on Jan 23, 2015
10. laanwj closed this on Jan 23, 2015

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11. laanwj referenced this in commit b6acd4563d on Jan 23, 2015
12. laanwj referenced this in commit ed4206acb1 on Jan 23, 2015
13. fsb4000 deleted the branch on Feb 8, 2015
14. jyap808 referenced this in commit 066fe32918 on Sep 14, 2015
15. glv2 referenced this in commit 8f12a5e5ea on Mar 22, 2016
16. sigmike referenced this in commit 8f9a4f18c3 on Jun 17, 2017
17. Astrych referenced this in commit b508b601db on Dec 18, 2018
18. Astrych referenced this in commit a50407d9cf on Jan 16, 2019
19. reddink referenced this in commit f21803f3c6 on May 27, 2020
20. MarcoFalke locked this on Sep 8, 2021

Milestone
0.10.0