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-rw-r--r--t/helper/test-config.c2
1 files changed, 1 insertions, 1 deletions
diff --git a/t/helper/test-config.c b/t/helper/test-config.c
index a6e936721f..ddd538b838 100644
--- a/t/helper/test-config.c
+++ b/t/helper/test-config.c
@@ -37,7 +37,7 @@
*
*/
-static int iterate_cb(const char *var, const char *value, void *data)
+static int iterate_cb(const char *var, const char *value, void *UNUSED(data))
{
static int nr;