Fix memory leak in autowiring::signal #945
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Fix a memory leak caused by the autowiring::signal destructor not properly freeing the last listener in the list of listeners. Also add a test to guarantee we don't miss this again, and add a corresponding test to autowiring::once_signal just in case.
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Fix a memory leak caused by the
autowiring::signaldestructor not properly freeing the last listener in the list of listeners. Also add a test to guarantee we don't miss this again, and add a corresponding test toautowiring::once_signaljust in case.