cftw: Allow directories to call the user callback

This provides a few benefits:

- This will allow searching for directories by name.
- Future commits will allow to remove files and directories, so this
  change was also required for cftw.

1 files changed, 3 insertions, 0 deletions

diff --git a/main.c b/main.c
index 048b1ba..82af0e6 100644
--- a/main.c
+++ b/main.c
@@ -768,6 +768,9 @@ end:
 static int add_length(const char *const fpath, const struct stat *const sb,
     void *const user)
 {
+    if (!S_ISREG(sb->st_mode))
+        return 0;
+
     unsigned long long *const l = user;
 
     *l += sb->st_size;