Fixed crash with CCLabelBMFont

[moadib]

Fixed crash with CCLabelBMFont when center- or right-aligned text have line breaks each other

You can reproduce crash with

CCLabelBMFont* text = CCLabelBMFont::create("abc\n\n1", "font.fnt");
text->setAlignment(kCCTextAlignmentCenter);
addChild(text);

[minggo]

I have tested the codes you pasted.
It doesn't crash.
You can test it with my branch "CCLabelBMFont_crash".

[moadib]

Hmm :)

Try change
CCLabelBMFont* text = CCLabelBMFont::create("abc\n\n1", "font.fnt");
to
CCLabelBMFont* text = CCLabelBMFont::create("abc\n\n123", "font.fnt");

[minggo]

You are right.
Thank you.

[minggo]

How about add some comment of these codes?
And i have created an issue for it http://www.cocos2d-x.org/issues/1464.