RFR (XXS): 8031779: Assert in MetaspaceGC is always true

[Erik Helin]

Hi all,

another very small patch. As I've read through the code in 
MetaspaceGC::compute_new_size I noticed an assert that always will be true:

size_t max_shrink_bytes = capacity_until_GC - minimum_desired_capacity;
assert(max_shrink_bytes >= 0, err_msg("max_shrink_bytes " SIZE_FORMAT,
   max_shrink_bytes));

The assert will be true since a size_t is always larger than or equal to 
zero.

Webrev:
http://cr.openjdk.java.net/~ehelin/8031779/webrev.00/

Issue:
https://bugs.openjdk.java.net/browse/JDK-8031779

Thanks,
Erik