Fixed stationary cursor in linewise visual mode

Lets have two lines. When we move the cursor on the second line, select the linewise visual mode and move upwards to the first line, then the cursor remains at the second line, although the selection range changes. This commit fixes it, cursor should be able to move upwards. This fix is rather cosmetic, but it should be clear now, how the selection range will change on motion (the change occurs at line with cursor).