stage1 修复bug 删除递归测试

stage1/spl_lexer.h

@@ -118,7 +118,7 @@ typedef enum {
 typedef struct {
     spl_tok_type_t type;
     const char *lexeme;
-    usize len;         /* token length in bytes */
+    usize len; /* token length in bytes */
     const char *fname;
     usize offset;
     usize line;