scenario:

• scroll down until only a note's link bar below is visible in viewport
• click on the link bar

Before this commit the app was crashing with this error: Error: [string "text.lua"]:1006: attempt to index a nil value stack traceback: text.lua:1006: in function 'to2' text.lua:482: in function 'screen_bottom1' text.lua:739: in function 'final_text_loc_on_screen' edit.lua:309: in function 'mouse_press' run.lua:747: in function 'mouse_press_in_normal_mode' run.lua:714: in function 'mouse_press' main.lua:306: in function <[string "main.lua"]:302> app.lua:442: in function <[string "app.lua"]:442> app.lua:29: in function <[string "app.lua"]:29> [C]: in function 'xpcall' app.lua:29: in function <[string "app.lua"]:20> [C]: in function 'xpcall' [love "boot.lua"]:377: in function <[love "boot.lua"]:344>