build: Explicitly check return values when using run_command

meson warns about not providing explicitly the check argument.

Signed-off-by: Daniel Wagner <[email protected]>

Author: dwsuse

doc/meson.build

@@ -65,7 +65,7 @@ if want_docs != 'false'
             input: file,
             output: '@[email protected]',
             configuration: conf)
-        c = run_command(list_man_pages, subst)
+        c = run_command(list_man_pages, subst, check: true)
         man_pages = c.stdout().split()
         foreach page : man_pages
           custom_target(