Subclasses of PixelMemory implement this method to unlock the memory.
Atalasoft.dotImage (in Atalasoft.dotImage.dll) Version: 220.127.116.11.0.297 (.NET 4.5.2, x86)
protected virtual void LLUnlock()
Protected Overridable Sub LLUnlock
LLUnlock is called by Unlock only when it is necessary to actually unlock the memory. Unlock manages both
thread safety as well as accumulation of locks. For any number of calls to Unlock, there will be precisely one call
to LLUnlock when there are no further lock requests. It is also guaranteed that LLUnlock can only be called by one
thread at a time.