Free the spi_device pointer before early returns.#16
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The allocated memory for spi_device was not free()'d in the case where the SPI device cannot be opened, nor in the case where the SPI port cannot be set to 8 bits per word.
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The allocated memory for spi_device was not free()'d in the case where the SPI device cannot be opened, nor in the case where the SPI port cannot be set to 8 bits per word.
This results in potential memory leaks, which are fixed by free()'ing the spi_device pointer before returning from the aforementioned execution paths.