[fixes #880] get rid of an unchecked cast warning for @Getter(lazy=true)

test/transform/resource/before/GetterLazyGenerics.java

@@ -0,0 +1,11 @@
+class GetterLazyGenerics<E> {
+	@lombok.Getter(lazy=true)
+	private final E field = getAny();
+	
+	@lombok.Getter(lazy=true)
+	private final long field2 = System.currentTimeMillis();
+	
+	public static <E> E getAny() {
+		return null;
+	}
+}