Motivation:
fd0d06e introduced the usage of MethodHandles and so also introduced some usages of invokeExact(...). Unfortunally when calling this method we missed to also cast the return value in the static init block of JdkAlpnSslUtils which lead to an exception to be thrown as the JVM did assume the return value is void which is not true.
Modifications:
Correctly cast the return value of invokeExact(...)
Result:
ALPN can be used in master with JDK again