此合并请求的源项目已被删除。
vrend_renderer: check for 0 length shader request.
This is a follow up change for a5bfadaa to fix some requests with 0 length shader. This moves the check from the decode phase into create_shader as userspace may send 0 length shader in a long shader request.
TEST=webglaquarium
TEST=piglit opengl -t glsl --glsl