[#1574] Added missing comment.

diff --git a/src/bin/admin/tests/mysql_tests.sh.in b/src/bin/admin/tests/mysql_tests.sh.in
index cd260838c76dc555510c567f09af0e900016faf9..8aaadb0d2c0896b9bad9f27cb946019a980d09f5 100644 (file)
--- a/src/bin/admin/tests/mysql_tests.sh.in
+++ b/src/bin/admin/tests/mysql_tests.sh.in
@@ -44,7 +44,7 @@ kea_admin="@abs_top_builddir@/src/bin/admin/kea-admin"
 run_statement() {
     hdr="$1";shift
     qry="$1";shift
-    exp_value="${1-}"
+    exp_value="${1-}" # Optional value. If not given, replace with empty string.
 
     # Execute the statment
     run_command \