mandb: Check for stray cats even if the manpath is unchanged

* src/mandb.c (mandb): Require the database file to be open before
calling `straycats`, but don't require `create_db` or
`update_db_wrapper` to have made any changes to it.
* src/tests/mandb-whatis-broken-link-changes: Update expected output.
* NEWS.md: Document this.

1 files changed, 5 insertions, 0 deletions

diff --git a/NEWS.md b/NEWS.md
index 724090ab..91648d8f 100644
--- a/NEWS.md
+++ b/NEWS.md
@@ -7,6 +7,11 @@ Fixes:
  * Fix segfault in typical uses of `man` when `nroff` is not installed.
  * Fix crash in `mandb` when processing stray cats.
 
+Improvements:
+
+ * Check for stray cats even if no manual pages in a given manpath were
+   changed.
+
 man-db 2.11.1 (15 November 2022)
 ================================