[Libreoffice] [REVIEW 3-5] potential fix for fdo#44391

[Noel Power]

would like to get this committed for 3.5, although I don't see the same 
artifacts  as mentioned in the bug, I do see sometimes the  some 
character is displayed still after switching to a blank cell from one 
with content. I no longer see this with the patch and believe that it 
can't do any harm in any case ( and probably does fix the issue )

fix to cherry pick is 
http://cgit.freedesktop.org/libreoffice/core/commit/?id=f00b387faeca2902909ce181f2f772a51ec4527f

thanks,

Noel