[Bug 742367] wavparse: initialize variables

[GStreamer (bugzilla.gnome.org)]

https://bugzilla.gnome.org/show_bug.cgi?id=742367
  GStreamer | gst-plugins-good | unspecified

--- Comment #1 from Vineeth <vineeth.tm at samsung.com> 2015-01-05 11:24:14 UTC ---
Created an attachment (id=293801)
 View: https://bugzilla.gnome.org/attachment.cgi?id=293801
 Review: https://bugzilla.gnome.org/review?bug=742367&attachment=293801

initialize variables

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