Comment to warn future folks to check Apex compiler implementation first

pmd-apex/src/main/java/net/sourceforge/pmd/lang/apex/rule/security/ApexOpenRedirectRule.java

@@ -96,6 +96,11 @@ public class ApexOpenRedirectRule extends AbstractApexRule {
             }
         } else {
             if (node instanceof ASTField) {
+                /* sergey.gorbaty: 
+                 * Apex Jorje parser is returning a null from Field.getFieldInfo(), but the info is available from an inner field. 
+                 * DO NOT attempt to optimize this block without checking that Jorje parser actually fixed its bug.
+                 * 
+                 */
                 try {
                     final Field f = node.getNode().getClass().getDeclaredField("fieldInfo");
                     f.setAccessible(true);