tree ddc1eccf593a16b2dae9c5c2756a5185f047f0c8
parent f7ba13da5fc004481cf057f47260f955d52e91ca
author Derek Jones <derek.jones@ellislab.com> 1210604915 +0000
committer Derek Jones <derek.jones@ellislab.com> 1210604915 +0000

changed overlay_watermark() to check for an alpha value before applying the image to help support PNG-24s with alpha transparency

http://codeigniter.com/bug_tracker/bug/4506/