iio: chemical: scd4x: use = { } instead of memset()

Use { } instead of memset() to zero-initialize stack memory to simplify
the code.

Signed-off-by: David Lechner <dlechner@baylibre.com>
Reviewed-by: Nuno Sá <nuno.sa@analog.com>
Reviewed-by: Andy Shevchenko <andriy.shevchenko@linux.intel.com>
Link: https://patch.msgid.link/20250611-iio-zero-init-stack-with-instead-of-memset-v1-12-ebb2d0a24302@baylibre.com
Signed-off-by: Jonathan Cameron <Jonathan.Cameron@huawei.com>

Author: dlech

drivers/iio/chemical/scd4x.c

@@ -665,10 +665,9 @@ static irqreturn_t scd4x_trigger_handler(int irq, void *p)
 	struct {
 		uint16_t data[3];
 		aligned_s64 ts;
-	} scan;
+	} scan = { };
 	int ret;
 
-	memset(&scan, 0, sizeof(scan));
 	mutex_lock(&state->lock);
 	ret = scd4x_read_poll(state, scan.data);
 	mutex_unlock(&state->lock);