lib: fix clang compiler warning

With some combination of clang and talloc, not using the return value
of talloc_steal() produces a warning. Ignore it, as talloc_steal() has
no failure modes per documentation.

1 files changed, 1 insertions, 1 deletions

diff --git a/lib/thread.cc b/lib/thread.cc
index 4dcf7053..8f53e122 100644
--- a/lib/thread.cc
+++ b/lib/thread.cc
@@ -524,7 +524,7 @@ _notmuch_thread_create (void *ctx,
     _resolve_thread_relationships (thread);
 
     /* Commit to returning thread. */
-    talloc_steal (ctx, thread);
+    (void) talloc_steal (ctx, thread);
 
   DONE:
     talloc_free (local);