Fix segfault when nroff is not installed

* src/man.c (try_section): Only free the `names` list if it is non-NULL
due to `NROFF_MISSING` being defined, and return early if options are
set such that cat files cannot be used either.
* NEWS.md: Document this.

1 files changed, 1 insertions, 0 deletions

diff --git a/NEWS.md b/NEWS.md
index 6aa4ff42..3c142df1 100644
--- a/NEWS.md
+++ b/NEWS.md
@@ -4,6 +4,7 @@ man-db 2.11.2
 Fixes:
 
  * Fix compile and test failures when `troff` is not `groff`.
+ * Fix segfault in typical uses of `man` when `nroff` is not installed.
 
 man-db 2.11.1 (15 November 2022)
 ================================