i#2666 dyn cxt: Fix early context free (!4722) · Merge requests · DynamoRIO / dynamorio

Merged Derek Bruening requested to merge i2666-fix-early-free into master Feb 06, 2021

Fixes a bug in PR #4703 where for post-CreateUserProcess handling it frees the heap buffer for a CONTEXT before the code is finished using it.

Also updates the CONTEXT heap buffers from PR #4703 to use thread-private heap where possible, to avoid locks.