fix timing

src/xrt/auxiliary/util/u_timing_render.c

@@ -170,7 +170,9 @@ calc_period(const struct render_timing *rt)
 	// Error checking.
 	uint64_t base_period_ns = min_period(rt);
 	if (base_period_ns == 0) {
+#ifndef _WIN32
 		assert(false && "Have not yet received and samples from timing driver.");
+#endif
 		base_period_ns = U_TIME_1MS_IN_NS * 16; // Sure
 	}
 

src/xrt/compositor/multi/comp_multi_system.c

@@ -521,6 +521,11 @@ comp_multi_create_system_compositor(struct xrt_compositor_native *xcn,
 		return XRT_ERROR_THREADING_INIT_FAILURE;
 	}
 
+	ret = os_mutex_init(&msc->list_and_timing_lock);
+	if (ret < 0) {
+		return XRT_ERROR_THREADING_INIT_FAILURE;
+	}
+
 	os_thread_helper_start(&msc->oth, thread_func, msc);
 
 	*out_xsysc = &msc->base;

src/xrt/targets/gui/gui_sdl2.c

@@ -100,7 +100,7 @@ gui_sdl2_init(struct sdl2_program *p)
 	SDL_GL_SetSwapInterval(1); // Enable vsync
 
 	// Setup OpenGL bindings.
-	bool err = gladLoadGL((GLADloadfunc)SDL_GL_GetProcAddress) == 0;
+	bool err = gladLoadGL() == 0;
 	if (err) {
 		return -1;
 	}

src/xrt/targets/openxr/oxr_sdl2_hack.c

@@ -120,7 +120,7 @@ sdl2_window_init(struct sdl2_program *p)
 	SDL_GL_SetSwapInterval(1); // Enable vsync
 
 	// Setup OpenGL bindings.
-	bool err = gladLoadGL((GLADloadfunc)SDL_GL_GetProcAddress) == 0;
+	bool err = gladLoadGL() == 0;
 	if (err) {
 		U_LOG_E("Failed to load GL functions!");
 		return;