REVIEWED: Examples compilation

examples/core/core_window_letterbox.c

@@ -43,7 +43,7 @@ int main(void)
 
     // Render texture initialization, used to hold the rendering result so we can easily resize it
     RenderTexture2D target = LoadRenderTexture(gameScreenWidth, gameScreenHeight);
-    SetTextureFilter(target.texture, FILTER_BILINEAR);  // Texture scale filter to use
+    SetTextureFilter(target.texture, TEXTURE_FILTER_BILINEAR);  // Texture scale filter to use
 
     Color colors[10] = { 0 };
     for (int i = 0; i < 10; i++) colors[i] = (Color){ GetRandomValue(100, 250), GetRandomValue(50, 150), GetRandomValue(10, 100), 255 };