make xstrdup argument const char*

1 files changed, 1 insertions, 1 deletions

diff --git a/src/main.c b/src/main.c
index 48fdb88..59f15f1 100644
--- a/src/main.c
+++ b/src/main.c
@@ -83,7 +83,7 @@ xrealloc (void *ptr, size_t size)
 }
 
 char *
-xstrdup (char *s)
+xstrdup (const char *s)
 {
   char *value;
   value = strdup (s);