gldownload: Use strlen() instead of sizeof(char*)
gldownload: Use strlen() instead of sizeof(char*)

gstgldownload.c:846:22: error: argument to 'sizeof' in 'memcpy' call is the same expression as the source; did you mean to provide an explicit length? [-Werror=sizeof-pointer-memaccess]

ystreet/gst-plugins-gl,ystreet/gst-plugins-gl,ystreet/gst-plugins-gl