From b696a371747caa9a2be16c482df37e91936f86c6 Mon Sep 17 00:00:00 2001
From: Anna Kozlova <anna.kozlova@jetbrains.com>
Date: Mon, 8 Jun 2015 15:04:39 +0300
Subject: [PATCH] NPE on usages of java in xml (IDEA-141203)

---
 .../refactoring/safeDelete/JavaSafeDeleteProcessor.java      | 5 ++++-
 1 file changed, 4 insertions(+), 1 deletion(-)

diff --git a/java/java-impl/src/com/intellij/refactoring/safeDelete/JavaSafeDeleteProcessor.java b/java/java-impl/src/com/intellij/refactoring/safeDelete/JavaSafeDeleteProcessor.java
index 74dd50d5d432..8c0a82d424ac 100644
--- a/java/java-impl/src/com/intellij/refactoring/safeDelete/JavaSafeDeleteProcessor.java
+++ b/java/java-impl/src/com/intellij/refactoring/safeDelete/JavaSafeDeleteProcessor.java
@@ -840,7 +840,10 @@ public class JavaSafeDeleteProcessor extends SafeDeleteProcessorDelegateBase {
       public boolean process(final PsiReference reference) {
         PsiElement element = reference.getElement();
         if (element != null) {
-          JavaSafeDeleteDelegate.EP.forLanguage(element.getLanguage()).createUsageInfoForParameter(reference, usages, parameter, method);
+          final JavaSafeDeleteDelegate safeDeleteDelegate = JavaSafeDeleteDelegate.EP.forLanguage(element.getLanguage());
+          if (safeDeleteDelegate != null) {
+            safeDeleteDelegate.createUsageInfoForParameter(reference, usages, parameter, method);
+          }
           if (!parameter.isVarArgs() && !RefactoringChangeUtil.isSuperMethodCall(element.getParent())) {
             final PsiParameter paramInCaller = SafeDeleteJavaCallerChooser.isTheOnlyOneParameterUsage(element.getParent(), parameterIndex, method);
             if (paramInCaller != null) {