Revert "matroskamux: Fix segmentation fault"
Revert "matroskamux: Fix segmentation fault"

This reverts commit f33f6f31d08e961e88254a638e4bfa9fa7a92196.

Kurento/gst-plugins-good,Kurento/gst-plugins-good,Kurento/gst-plugins-good,Kurento/gst-plugins-good,Kurento/gst-plugins-good