Call DestroyInstance on each driver in error path

Call DestroyInstance on each driver in error path

If CreateInstance successfully calls terminator_CreateInstance but subsequently fails on the way
back up the chain, the loader should call DestroyInstance on each driver to give them a chance to
clean up. This path is possible during CTS OOM tests which cause VVL to fail which then causes
leaks to occur.

Additionally, the layer name allocations needed to be cleaned up in this error
path as well, since there is no chance for vkDestroyInstance to run.