Fixed unused parameter warning.

3rdparty/glsl-optimizer/src/glsl/standalone_scaffolding.cpp

@@ -44,13 +44,13 @@ _mesa_reference_shader(struct gl_context *ctx, struct gl_shader **ptr,
 }
 
 void
-_mesa_shader_debug(struct gl_context *, GLenum, GLuint *id,
+_mesa_shader_debug(struct gl_context *, GLenum, GLuint *,
                    const char *, int)
 {
 }
 
 extern "C" void
-_mesa_error_no_memory(const char *caller)
+_mesa_error_no_memory(const char *)
 {
 }