LUCENE-6467: Simplify Query.equals.

git-svn-id: https://svn.apache.org/repos/asf/lucene/dev/trunk@1707685 13f79535-47bb-0310-9956-ffa450edef68

lucene/CHANGES.txt

@@ -238,6 +238,8 @@ Other
   reflection on Java's runtime classes is very restricted.
   (Robert Muir, Uwe Schindler)
 
+* LUCENE-6467: Simplify Query.equals. (Paul Elschot via Adrien Grand)
+
 Build
 
 * LUCENE-6732: Improve checker for invalid source patterns to also

lucene/core/src/java/org/apache/lucene/search/Query.java

@@ -81,12 +81,8 @@ public abstract class Query {
 
   @Override
   public boolean equals(Object obj) {
-    if (this == obj)
-      return true;
     if (obj == null)
       return false;
-    if (getClass() != obj.getClass())
-      return false;
-    return true;
+    return getClass() == obj.getClass();
   }
 }