Spring Avoid String allocations in MediaType.checkParameters

Hi,

while investigating things for #29421 I noticed that a tiny, but noticeable, chunk of allocations is coming from MediaType.checkParameters.

Together with the actual String allocation, this accounts for 1.5-2% of allocations in the benchmarks. So not huge, but avoidable if you ask me.

Cheers, Christoph

Comment From: sbrannen

This has been merged into 5.3.x and main.

Thanks