8343427: Class file load hook crashes on archived classes from multi-release JARs

Reviewed-by: dholmes, iklam

src/java.base/share/classes/java/lang/ClassLoader.java

@@ -1685,6 +1685,15 @@ public abstract class ClassLoader {
         }
     }
 
+    /**
+     * Called by VM for reading class bytes.
+     */
+    private byte[] getResourceAsByteArray(String name) throws IOException {
+        Objects.requireNonNull(name);
+        InputStream is = getResourceAsStream(name);
+        return is != null ? is.readAllBytes() : null;
+    }
+
     /**
      * Open for reading, a resource of the specified name from the search path
      * used to load classes.  This method locates the resource through the