coreinit: fix race condition that causes crash #1138
Merged
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On linux cemu sometimes randomly crashes on startup. Looking at the coredump in a debugger showed that it crashed in emplace_back for a vector because of a double free. Write access to a vector is not thread-safe, but when cemu is in multi-core recompiler mode when the timing is just right two or more threads simultaneously emplace in the vector. Added a mutex to protect access.