IllegalStateException on calling free for pooled item to synchronized pool using soft references and being full

[sta4152]

Usig com.esotericsoftware.kryo.util.Pool with threadSafe = true and softReferences = true and a limit.

On calling free and the pool already being full, an IllegalStateException is thrown:
java.lang.IllegalStateException: Queue full at java.util.AbstractQueue.add(AbstractQueue.java:98) ~[?:?] at com.esotericsoftware.kryo.util.Pool$SoftReferenceQueue.offer(Pool.java:157) ~[76:com.esotericsoftware.kryo:5.0.0.RC5] at com.esotericsoftware.kryo.util.Pool.free(Pool.java:86) ~[76:com.esotericsoftware.kryo:5.0.0.RC5]

A LinkedBlockingQueue is used in this case with the "add" method not bein overwritten and being called in the SoftReferenceQueue's offer method.

This doe not happen with one of the boolean parameters set to false.

[theigl]

@sta4152: Thanks for reporting this issue. Could you please create a minimal test-case that reproduces the problem?

[theigl]

And if you have a fix for this in mind, please create a PR!

[theigl]

@sta4152: I managed to replicate the issue and created #750.