fix: double free bug on MacOS (thanks @drandreas)
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@@ -288,6 +288,7 @@ __attribute__((force_align_arg_pointer))
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// when this reader thread dies, we close the serial port.
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// when this reader thread dies, we close the serial port.
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uart_close(sp);
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uart_close(sp);
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sp = NULL;
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pthread_exit(NULL);
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pthread_exit(NULL);
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return NULL;
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return NULL;
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