CRAS: Fix warnings that break the fuzzing build

Change-Id: I08c5c9c3ea53bcd42d2511378d9baaf2efab034a
Signed-off-by: Dylan Reid <dgreid@chromium.org>
Reviewed-on: https://chromium-review.googlesource.com/1169905
Reviewed-by: Chih-Yang Hsia <paulhsia@chromium.org>
diff --git a/cras/src/server/cras_iodev.c b/cras/src/server/cras_iodev.c
index 2f797d8..8cebeb8 100644
--- a/cras/src/server/cras_iodev.c
+++ b/cras/src/server/cras_iodev.c
@@ -988,7 +988,7 @@
 		.scaler = 0.0f,
 		.increment = 0.0f,
 	};
-	float software_volume_scaler;
+	float software_volume_scaler = 1.0;
 	int software_volume_needed = cras_iodev_software_volume_needed(iodev);
 	int rc;
 
diff --git a/cras/src/tests/cras_test_client.c b/cras/src/tests/cras_test_client.c
index c86d415..770b4cf 100644
--- a/cras/src/tests/cras_test_client.c
+++ b/cras/src/tests/cras_test_client.c
@@ -640,8 +640,8 @@
 	const struct cras_audio_thread_snapshot *snapshot)
 {
 	printf("-------------snapshot------------\n");
-	printf("Event time: %u.%d\n",
-	       snapshot->timestamp.tv_sec,
+	printf("Event time: %" PRId64 ".%ld\n",
+	       (int64_t)snapshot->timestamp.tv_sec,
 	       snapshot->timestamp.tv_nsec);
 
 	printf("Event type: ");