lxcid/LXReorderableCollectionViewFlowLayout — pull request #77 by louistran99 (2014-09-23 17:04:55+00:00)
Title: Fixed intermittent crash when long press one cell & drag and tap/hold an...

...other cell. When local variable 'previousIndexPath' is nil, the method -(void) invalidateLayoutIfNecessary will crash at line 171. This fix prevents indexing into 'nil' at line 171.