assertion related to NPE at DynamicCallSiteDesc::withArgs should be reworded

Summary

The assertion related to NullPointerException at method java.lang.constant.DynamicCallSiteDesc::withArgs should be reworded.

Problem

The assertion should mention that the NPE can be thrown if the argument contains any null entry.

Solution

Reword the assertion.

Specification

diff -r dd321e3596c0 -r 78f3b29fb255 src/java.base/share/classes/java/lang/constant/DynamicCallSiteDesc.java
--- a/src/java.base/share/classes/java/lang/constant/DynamicCallSiteDesc.java   Wed May 29 13:58:05 2019 +0100
+++ b/src/java.base/share/classes/java/lang/constant/DynamicCallSiteDesc.java   Wed May 29 09:14:55 2019 -0400
@@ -156,7 +156,7 @@
      *                      to the bootstrap, that would appear in the
      *                      {@code BootstrapMethods} attribute
      * @return the nominal descriptor
-     * @throws NullPointerException if any parameter is null
+     * @throws NullPointerException if the argument or its contents are {@code null}
      */
     public DynamicCallSiteDesc withArgs(ConstantDesc... bootstrapArgs) {
         return new DynamicCallSiteDesc(bootstrapMethod, invocationName, invocationType, bootstrapArgs);