[refactor] Fixed a typo in a local var name, and utility-method-ified it to then make that typo a moot point.

src/utils/lombok/javac/Javac.java

@@ -22,7 +22,7 @@
 package lombok.javac;
 
 import static lombok.javac.JavacTreeMaker.TreeTag.treeTag;
-import static lombok.javac.JavacTreeMaker.TypeTag.typeTag;
+import static lombok.javac.JavacTreeMaker.TypeTag.*;
 
 import java.lang.reflect.Field;
 import java.lang.reflect.InvocationTargetException;
@@ -184,16 +184,8 @@ public class Javac {
 	public static final TypeTag CTC_NONE = typeTag("NONE");
 	public static final TypeTag CTC_BOT = typeTag("BOT");
 	public static final TypeTag CTC_ERROR = typeTag("ERROR");
-	public static final TypeTag CTC_UNKNOWN; // Removed in JDK24
-	static {
-		TypeTag unknonwTypeTag = null;
-		try {
-			unknonwTypeTag = typeTag("UNKNOWN"); 
-		} catch (Exception e) {
-			if (!(e instanceof NoSuchFieldException)) throw Javac.sneakyThrow(e);
-		}
-		CTC_UNKNOWN = unknonwTypeTag;
-	}
+	public static final TypeTag CTC_UNKNOWN = typeTagPermissive("UNKNOWN"); // UNKNOWN has been removed in JDK24, hence, we need to look it up permissively (just make it `null` if it does not exist).
+	
 	public static final TypeTag CTC_UNDETVAR = typeTag("UNDETVAR");
 	public static final TypeTag CTC_CLASS = typeTag("CLASS");
 	

src/utils/lombok/javac/JavacTreeMaker.java

@@ -1,5 +1,5 @@
 /*
- * Copyright (C) 2013-2020 The Project Lombok Authors.
+ * Copyright (C) 2013-2025 The Project Lombok Authors.
  * 
  * Permission is hereby granted, free of charge, to any person obtaining a copy
  * of this software and associated documentation files (the "Software"), to deal
@@ -258,6 +258,15 @@ public class JavacTreeMaker {
 		public static TypeTag typeTag(String identifier) {
 			return new TypeTag(getFieldCached(TYPE_TAG_CACHE, Javac.getJavaCompilerVersion() < 8 ? "com.sun.tools.javac.code.TypeTags" : "com.sun.tools.javac.code.TypeTag", identifier));
 		}
+		
+		public static TypeTag typeTagPermissive(String identifier) {
+			try {
+				return typeTag(identifier);
+			} catch (Exception e) {
+				if (e instanceof NoSuchFieldException) return null;
+				throw Javac.sneakyThrow(e);
+			}
+		}
 	}
 	
 	public static class TreeTag extends SchroedingerType {