[Bug 739281] video-blend: correct improper logic calculations

[GStreamer (bugzilla.gnome.org)]

https://bugzilla.gnome.org/show_bug.cgi?id=739281
  GStreamer | gst-plugins-base | unspecified

--- Comment #1 from Vineeth <vineeth.tm at samsung.com> 2014-10-28 09:19:24 UTC ---
Created an attachment (id=289501)
 View: https://bugzilla.gnome.org/attachment.cgi?id=289501
 Review: https://bugzilla.gnome.org/review?bug=739281&attachment=289501

correct improper logic in video-blend

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