Fix leave modal when leaving new post
Fix leave modal when leaving new post

no ref
- set titleScratch to empty string if unset

TryGhost/Ghost-Admin,JohnONolan/Ghost-Admin,kevinansfield/Ghost-Admin,acburdine/Ghost-Admin,kevinansfield/Ghost-Admin,dbalders/Ghost-Admin,JohnONolan/Ghost-Admin,dbalders/Ghost-Admin,acburdine/Ghost-Admin,airycanon/Ghost-Admin,airycanon/Ghost-Admin,TryGhost/Ghost-Admin