lpbin: Fix crash when extracting thumbnail
lpbin: Fix crash when extracting thumbnail

Change-Id: Ibf20257f41a653ebb4db49569c53d7877469283c
Reviewed-on: https://gpro.palm.com/6987
Reviewed-by: Jeongseok Kim <0c03ab7a1b32f29697716389c3f9549845834271@lge.com>
Tested-by: Jeongseok Kim <0c03ab7a1b32f29697716389c3f9549845834271@lge.com>

justinjoy/gst-plugins-lp,justinjoy/gst-plugins-lp