Don't print 'bogus channel load sample' message if total == 0

Change-Id: I857fecc76dc16ba4431f3c0142bb0d798a9f73dc
Closes: OS#4614
diff --git a/src/osmo-bsc/chan_alloc.c b/src/osmo-bsc/chan_alloc.c
index f23a982..9b80df3 100644
--- a/src/osmo-bsc/chan_alloc.c
+++ b/src/osmo-bsc/chan_alloc.c
@@ -203,9 +203,11 @@
 	}
 
 	/* Check for invalid samples (shouldn't happen). */
-	if (total == 0 || used > total) {
+	if (used > total) {
 		LOG_BTS(bts, DRLL, LOGL_NOTICE, "bogus channel load sample (used=%"PRIu64" / total=%"PRIu32")\n",
 			used, total);
+	}
+	if (total == 0 || used > total) {
 		bts->T3122 = 0; /* disable override of network-wide default value */
 		bts->chan_load_samples_idx = 0; /* invalidate other samples collected so far */
 		return;