bugfix for multiplication by 0.80 in integer domain

src/main/java/com/fasterxml/jackson/core/sym/ByteQuadsCanonicalizer.java

@@ -1097,7 +1097,7 @@ private int _resizeAndFindOffsetForAdd(int hash) throws StreamConstraintsExcepti
     }
 
     static int multiplyByFourFifths(int number) {
-        return (int) (number * 1_717_986_919L >>> 33);
+        return (int) (number * 3_435_973_837L >>> 32);
     }
 
     // Helper method for checking if we should simply rehash() before add

src/test/java/com/fasterxml/jackson/core/sym/ByteQuadsCanonicalizerTest.java

@@ -1,16 +1,19 @@
 package com.fasterxml.jackson.core.sym;
 
-import com.fasterxml.jackson.core.BaseTest;
 import org.junit.Ignore;
+import org.junit.Test;
 
-public class ByteQuadsCanonicalizerTest extends BaseTest {
+import static org.junit.Assert.assertEquals;
+
+public class ByteQuadsCanonicalizerTest {
+    @Test
     @Ignore
     public void testMultiplyByFourFifths() {
         for (long i = 0; i <= Integer.MAX_VALUE; i++) {
             int number = (int) i;
             int expected = (int) (number * 0.80);
             int actual = ByteQuadsCanonicalizer.multiplyByFourFifths(number);
-            assertEquals(expected, actual, number);
+            assertEquals("input=" + number, expected, actual);
         }
     }
 }