[TIMOB-24926] Android: Prevent fireEvent on null proxy

[garymathews]

• Prevent fireEvent from taking place on a null proxy during release

TEST CASE

var win = Ti.UI.createWindow(),
    a = Ti.UI.createView(),
    b = Ti.UI.createView(),
    c = Ti.UI.createView(),
    row = Ti.UI.createTableViewRow(),
    table = Ti.UI.createTableView({data: [row]}),
    scrollableView = Ti.UI.createScrollableView({
      views: [a, b, c]
    }),
    i = 0;

row.add(Ti.UI.createImageView());
c.add(table);

setInterval(function() {
    scrollableView.currentPage = i++ % 3;
}, 1000);

win.add(scrollableView);
win.open();

JIRA Ticket

[ypbnv]

CR: Pass

[mukherjee2]

Node Version: 6.10.3
NPM Version: 3.10.10
Mac OS: 10.12.4
Appc CLI: 6.2.2
Appc CLI NPM: 4.2.9
Titanium SDK version: 6.1.1.GA
Appcelerator Studio, build: 4.9.0.201705302345
Xcode 8.3.2
FR Passed with above environment. I first tested with the affected version (6.1.1.GA) and found that the app immediately crashed upon launch. I tried it a few times and it crashed repeatedly. Then I tried with the fixed version. I updated the test case to have different colors for each window so it would be evident when the windows scroll. The windows did scroll as expected, and at no time did I experience any crashes.