dir: consolidate similar code in treat_directory()

Both the DIR_SKIP_NESTED_GIT and DIR_NO_GITLINKS cases were checking for
whether a path was actually a nonbare repository.  That code could be
shared, with just the result of how to act differing between the two
cases.

Signed-off-by: Elijah Newren <[email protected]>
Signed-off-by: Junio C Hamano <[email protected]>

Author: newren

dir.c

@@ -1461,6 +1461,8 @@ static enum path_treatment treat_directory(struct dir_struct *dir,
 	const char *dirname, int len, int baselen, int exclude,
 	const struct pathspec *pathspec)
 {
+	int nested_repo = 0;
+
 	/* The "len-1" is to strip the final '/' */
 	switch (directory_exists_in_index(istate, dirname, len-1)) {
 	case index_directory:
@@ -1470,15 +1472,16 @@ static enum path_treatment treat_directory(struct dir_struct *dir,
 		return path_none;
 
 	case index_nonexistent:
-		if (dir->flags & DIR_SKIP_NESTED_GIT) {
-			int nested_repo;
+		if ((dir->flags & DIR_SKIP_NESTED_GIT) ||
+		    !(dir->flags & DIR_NO_GITLINKS)) {
 			struct strbuf sb = STRBUF_INIT;
 			strbuf_addstr(&sb, dirname);
 			nested_repo = is_nonbare_repository_dir(&sb);
 			strbuf_release(&sb);
-			if (nested_repo)
-				return path_none;
 		}
+		if (nested_repo)
+			return ((dir->flags & DIR_SKIP_NESTED_GIT) ? path_none :
+				(exclude ? path_excluded : path_untracked));
 
 		if (dir->flags & DIR_SHOW_OTHER_DIRECTORIES)
 			break;
@@ -1506,13 +1509,6 @@ static enum path_treatment treat_directory(struct dir_struct *dir,
 
 			return path_none;
 		}
-		if (!(dir->flags & DIR_NO_GITLINKS)) {
-			struct strbuf sb = STRBUF_INIT;
-			strbuf_addstr(&sb, dirname);
-			if (is_nonbare_repository_dir(&sb))
-				return exclude ? path_excluded : path_untracked;
-			strbuf_release(&sb);
-		}
 		return path_recurse;
 	}