RFR 8170733: HashMap.HashIterator.remove method does not use cached value for the hash code.

[Paul Sandoz]

Hi,

Please review this small fix to the Linked/HashMap iterators. The remove method 
can use the cached hash code.

Paul.

diff -r 5c9389804cbc src/java.base/share/classes/java/util/HashMap.java
--- a/src/java.base/share/classes/java/util/HashMap.java        Mon Dec 05 
12:53:53 2016 +0530
+++ b/src/java.base/share/classes/java/util/HashMap.java        Mon Dec 05 
12:10:46 2016 -0800
@@ -1502,8 +1502,7 @@
             if (modCount != expectedModCount)
                 throw new ConcurrentModificationException();
             current = null;
-            K key = p.key;
-            removeNode(hash(key), key, null, false, false);
+            removeNode(p.hash, p.key, null, false, false);
             expectedModCount = modCount;
         }
     }
diff -r 5c9389804cbc src/java.base/share/classes/java/util/LinkedHashMap.java
--- a/src/java.base/share/classes/java/util/LinkedHashMap.java  Mon Dec 05 
12:53:53 2016 +0530
+++ b/src/java.base/share/classes/java/util/LinkedHashMap.java  Mon Dec 05 
12:10:46 2016 -0800
@@ -731,8 +731,7 @@
             if (modCount != expectedModCount)
                 throw new ConcurrentModificationException();
             current = null;
-            K key = p.key;
-            removeNode(hash(key), key, null, false, false);
+            removeNode(p.hash, p.key, null, false, false);
             expectedModCount = modCount;
         }
     }