Fix typo in comment.

[r24510]

diff --git a/ast_t.h b/ast_t.h
index fd6b62f..f439064 100644 (file)
--- a/ast_t.h
+++ b/ast_t.h
@@ -217,7 +217,7 @@ typedef enum funcname_kind_t {
        case EXPR_UNARY_DELETE_ARRAY:
 
 /**
- * unary expression with optinal operand
+ * unary expression with optional operand
  */
 #define EXPR_UNARY_CASES_OPTIONAL \
        case EXPR_UNARY_THROW:        \