sources: constify parameters of log_selection_message()

diff --git a/sources.c b/sources.c
index 0fa9eebbbc013befccf1c58ce8f1e6dcf5d70f2b..9865908652a5f2e529c59cda2f05fa0d6d4c8fae 100644 (file)
--- a/sources.c
+++ b/sources.c
@@ -483,7 +483,7 @@ SRC_ResetReachability(SRC_Instance inst)
 /* ================================================== */
 
 static void
-log_selection_message(char *format, char *arg)
+log_selection_message(const char *format, const char *arg)
 {
   if (REF_GetMode() != REF_ModeNormal)
     return;