vo_opengl: fix extension name

video/out/opengl/common.c

@@ -317,7 +317,7 @@ static const struct gl_functions gl_functions[] = {
     // uniform buffer object extensions, requires OpenGL 3.1.
     {
         .ver_core = 310,
-        .extension = "ARB_uniform_buffer_object",
+        .extension = "GL_ARB_uniform_buffer_object",
         .functions = (const struct gl_function[]) {
             DEF_FN(GetUniformBlockIndex),
             DEF_FN(UniformBlockBinding),