Merge branch 'nk/dir-c-comment-update'

Update stale in-code comment.

* nk/dir-c-comment-update:
  dir.c: fix comments to agree with argument name

dir.c

@@ -1040,9 +1040,9 @@ static int add_patterns_from_buffer(char *buf, size_t size,
  * an index if 'istate' is non-null), parse it and store the
  * exclude rules in "pl".
  *
- * If "ss" is not NULL, compute SHA-1 of the exclude file and fill
+ * If "oid_stat" is not NULL, compute oid of the exclude file and fill
  * stat data from disk (only valid if add_patterns returns zero). If
- * ss_valid is non-zero, "ss" must contain good value as input.
+ * oid_stat.valid is non-zero, "oid_stat" must contain good value as input.
  */
 static int add_patterns(const char *fname, const char *base, int baselen,
 			struct pattern_list *pl, struct index_state *istate,
@@ -1090,7 +1090,7 @@ static int add_patterns(const char *fname, const char *base, int baselen,
 			int pos;
 			if (oid_stat->valid &&
 			    !match_stat_data_racy(istate, &oid_stat->stat, &st))
-				; /* no content change, ss->sha1 still good */
+				; /* no content change, oid_stat->oid still good */
 			else if (istate &&
 				 (pos = index_name_pos(istate, fname, strlen(fname))) >= 0 &&
 				 !ce_stage(istate->cache[pos]) &&