db: evaluate return value of sqlite3_finalize(), tweak log output.
diff --git a/openbsc/src/utils/meas_db.c b/openbsc/src/utils/meas_db.c
index cf4ce6e..6c7e7ae 100644
--- a/openbsc/src/utils/meas_db.c
+++ b/openbsc/src/utils/meas_db.c
@@ -315,15 +315,21 @@
 void meas_db_close(struct meas_db_state *st)
 {
 	int retries;
-	sqlite3_finalize(st->stmt_ins_mr);
-	sqlite3_finalize(st->stmt_ins_ud);
-	sqlite3_finalize(st->stmt_upd_mr);
+	if (sqlite3_finalize(st->stmt_ins_mr) != SQLITE_OK)
+		fprintf(stderr, "DB insert measurement report finalize error: %s\n",
+			sqlite3_errmsg(st->db));
+	if (sqlite3_finalize(st->stmt_ins_ud) != SQLITE_OK)
+		fprintf(stderr, "DB insert unidir finalize error: %s\n",
+			sqlite3_errmsg(st->db));
+	if (sqlite3_finalize(st->stmt_upd_mr) != SQLITE_OK)
+		fprintf(stderr, "DB update measurement report finalize error: %s\n",
+			sqlite3_errmsg(st->db));
 	retries = 0;
 	while (1) {
 		if (sqlite3_close(st->db) == SQLITE_OK)
 			break;
 		if ((++retries) >= 3) {
-			fprintf(stderr, "Unable to close DB\n");
+			fprintf(stderr, "Unable to close DB, abandoning.\n");
 			break;
 		}
 		sleep(1);