Merge remote-tracking branch 'origin/1.19.2' into 1.19.4

Author: embeddedt

common/src/main/java/org/embeddedt/modernfix/common/mixin/bugfix/packet_leak/ClientPlayNetHandlerMixin.java

@@ -0,0 +1,28 @@
+package org.embeddedt.modernfix.common.mixin.safety;
+
+import net.minecraft.client.renderer.entity.LivingEntityRenderer;
+import net.minecraft.client.renderer.entity.layers.RenderLayer;
+import org.embeddedt.modernfix.annotation.ClientOnlyMixin;
+import org.spongepowered.asm.mixin.Final;
+import org.spongepowered.asm.mixin.Mixin;
+import org.spongepowered.asm.mixin.Mutable;
+import org.spongepowered.asm.mixin.Shadow;
+import org.spongepowered.asm.mixin.injection.At;
+import org.spongepowered.asm.mixin.injection.Inject;
+import org.spongepowered.asm.mixin.injection.callback.CallbackInfo;
+
+import java.util.Collections;
+import java.util.List;
+
+@Mixin(LivingEntityRenderer.class)
+@ClientOnlyMixin
+public class LivingEntityRendererMixin {
+    @Shadow @Final @Mutable
+    protected List<RenderLayer<?, ?>> layers;
+
+    @Inject(method = "<init>", at = @At("RETURN"))
+    private void synchronizeLayerList(CallbackInfo ci) {
+        /* allows buggy mods to call addLayer concurrently, order is not deterministic but can't fix that */
+        this.layers = Collections.synchronizedList(layers);
+    }
+}