Fix hex escape in char literals.

1 files changed, 1 insertions, 1 deletions

diff --git a/expr.c b/expr.c
index 75c0423..88cf764 100644
--- a/expr.c
+++ b/expr.c
@@ -148,7 +148,7 @@ unescape(char **p)
 			++s;
 			assert(isxdigit(*s));
 			c = 0;
-			do c = c * 16 + (*s > '9' ? tolower(*s) - 'a' : *s - '0');
+			do c = c * 16 + (*s > '9' ? 10 + tolower(*s) - 'a' : *s - '0');
 			while (isxdigit(*++s));
 			break;
 		default: