Fix for bug #2890105, last line has EOLFilled style but blank space before background colour.
Fix for bug #2890105, last line has EOLFilled style but blank space before
background colour.

rhaberkorn/scintilla-mirror,rhaberkorn/scintilla-mirror,rhaberkorn/scintilla-mirror,rhaberkorn/scintilla-mirror,rhaberkorn/scintilla-mirror,rhaberkorn/scintilla-mirror,rhaberkorn/scintilla-mirror,rhaberkorn/scintilla-mirror