fix crash with get_tok_str() in skip()

crash was triggered by numbers etc. as unexpected token, i.e.
everything that requires additional information with the token.

1 files changed, 1 insertions, 1 deletions

diff --git a/tccpp.c b/tccpp.c
index 27f9870..464d60b 100644
--- a/tccpp.c
+++ b/tccpp.c
@@ -90,7 +90,7 @@ static void macro_subst(
 ST_FUNC void skip(int c)
 {
     if (tok != c)
-        error("'%c' expected (got \"%s\")", c, get_tok_str(tok, NULL));
+        error("'%c' expected (got \"%s\")", c, get_tok_str(tok, &tokc));
     next();
 }