Fix

Author: rcosta358

liquidjava-verifier/src/main/java/liquidjava/utils/VariableFormatter.java

@@ -48,6 +48,6 @@ private static String toSuperscript(String number) {
     }
 
     private static boolean isSpecialIdentifier(String id) {
-        return id == "fresh" || id == "ret";
+        return "fresh".equals(id) || "ret".equals(id);
     }
 }