kc3-lang/libtommath

diff --git a/demo/shared.c b/demo/shared.c
index 4e98808..a4ac833 100644
--- a/demo/shared.c
+++ b/demo/shared.c
@@ -2,7 +2,7 @@
 
 void ndraw(const mp_int *a, const char *name)
 {
-   char *buf = NULL;
+   char *buf;
    int size;
 
    mp_radix_size(a, 10, &size);