5 more compiler warnings in master

[Uwe Stöhr]

Since I am now able to compile master again with the latest MSVC 2015 
compiler, I get these new warnings:

D:\LyXGit\Master\src\Changes.cpp(562): warning C4244: 'initializing': 
conversion from 'double' to 'int', possible loss of data 
[D:\LyXGit\Master\compile-2015\src\LyX.vcxproj]

D:\LyXGit\Master\src\Changes.cpp(562): warning C4244: 'initializing': 
conversion from 'double' to 'const int', possible loss of data 
[D:\LyXGit\Master\compile-2015\src\LyX.vcxproj]

D:\LyXGit\Master\src\Changes.cpp(592): warning C4244: 'argument': 
conversion from 'double' to 'int', possible loss of data 
[D:\LyXGit\Master\compile-2015\src\LyX.vcxproj]

D:\LyXGit\Master\src\Changes.cpp(592): warning C4244: 'argument': 
conversion from 'const double' to 'int', possible loss of data 
[D:\LyXGit\Master\compile-2015\src\LyX.vcxproj]

D:\LyXGit\Master\src\RowPainter.cpp(208): warning C4244: 'argument': 
conversion from 'double' to 'int', possible loss of data 
[D:\LyXGit\Master\compile-2015\src\LyX.vcxproj]

regards Uwe