fix: patch netty's NativeLibraryLoader

Author: xhyrom

common/src/main/java/link/e4mc/mixin/netty/NativeLibraryLoaderMixin.java

@@ -0,0 +1,26 @@
+package link.e4mc.mixin.netty;
+
+import dev.xhyrom.e4mc.shadow.io.netty.util.internal.NativeLibraryLoader;
+import org.spongepowered.asm.mixin.Mixin;
+import org.spongepowered.asm.mixin.injection.At;
+import org.spongepowered.asm.mixin.injection.Inject;
+import org.spongepowered.asm.mixin.injection.callback.CallbackInfoReturnable;
+
+import java.net.URL;
+
+@Mixin(value = NativeLibraryLoader.class, remap = false)
+public class NativeLibraryLoaderMixin {
+    @Inject(
+            method = "getResource(Ljava/lang/String;Ljava/lang/ClassLoader;)Ljava/net/URL;",
+            at = @At("RETURN"),
+            cancellable = true
+    )
+    private static void e4mc_retro_minecraft$fallbackToGetResource(String path, ClassLoader loader, CallbackInfoReturnable<URL> cir) {
+        if (cir.getReturnValue() == null && loader != null) {
+            URL fallbackUrl = loader.getResource(path);
+            if (fallbackUrl == null) return;
+
+            cir.setReturnValue(fallbackUrl);
+        }
+    }
+}

common/src/main/resources/e4mc_retro_minecraft.mixins.json

@@ -9,7 +9,8 @@
     "PardonCommandMixin",
     "WhitelistCommandMixin",
     "ServerConnectionListenerMixin",
-    "CommandsMixin"
+    "CommandsMixin",
+    "netty.NativeLibraryLoaderMixin"
   ],
   "client": [
     "PlayerListMixin"