[v3] right click in editor bug

[peterkroon]

• Go to: http://codemirror.net/3/mode/less/index.html
• Right click somewhere in the editor

Uncaught TypeError: Cannot read property 'maxLineChanged' of undefined  codemirror.js:952

if (view.maxLineChanged && !cm.options.lineWrapping) {
    //Uncaught TypeError: Cannot read property 'maxLineChanged' of undefined
    var width = measureLine(cm, view.maxLine, view.maxLine.text.length).left;
    display.sizer.style.minWidth = (width + 3 + scrollerCutOff) + "px";
    view.maxLineChanged = false;
}

[0b10011]

Note: This is only in Chrome. In Firefox, you receive:

TypeError: e is undefined

function e_target(e) {return e.target || e.srcElement;}

codemirror.js (line 3445)

[0b10011]

I have a fix for this, will submit as a pull request in a few. But first, I'm going to try to fix the bug in Firefox as well, and submit it in the same pull request.