RFR(XXS) 8231275 Remove null check in the beginning of SystemDictionary::load_shared_class()

[coleen.phillimore at oracle.com]

Looks good + trivial.
Coleen

On 9/20/19 1:21 PM, Calvin Cheung wrote:
> Looks good.
>
> thanks,
>
> Calvin
>
> On 9/20/19 9:42 AM, Ioi Lam wrote:
>> https://bugs.openjdk.java.net/browse/JDK-8231275
>> http://cr.openjdk.java.net/~iklam/jdk14/8231275-remove-null-check-in-load-shared-class.v01/ 
>>
>>
>> SystemDictionary::load_shared_class() should not be called with a 
>> NULL class. I replaced the null check with an assert.
>>
>> Thanks
>> - Ioi