fix warnings from previous commit

Batch struct initializer needed more {{braces}}

source/blender/gpu/intern/gpu_framebuffer.c

@@ -386,7 +386,7 @@ void GPU_framebuffer_blur(
 
 	static VertexFormat format = {0};
 	static VertexBuffer vbo = {{0}};
-	static Batch batch = {0};
+	static Batch batch = {{0}};
 
 	const float scaleh[2] = {1.0f / GPU_texture_width(blurtex), 0.0f};
 	const float scalev[2] = {0.0f, 1.0f / GPU_texture_height(tex)};