crimson/.../shard_services.cc: pass by reference from do_with

Capturing the value passed by do_with by value causes later captures
by reference to be invalid past the lifetime of the lambda frame.

Fixes: https://tracker.ceph.com/issues/64513
Signed-off-by: Samuel Just <[email protected]>

Author: athanatos

src/crimson/osd/shard_services.cc

@@ -808,7 +808,7 @@ seastar::future<MURef<MOSDMap>> OSDSingletonState::build_incremental_map_msg(
                           crimson::make_message<MOSDMap>(
                             monc.get_fsid(),
                             osdmap->get_encoding_features()),
-                          [this, &first, FNAME, last](unsigned int map_message_max,
+                          [this, &first, FNAME, last](auto &map_message_max,
                                                       auto &m) {
     m->cluster_osdmap_trim_lower_bound = superblock.cluster_osdmap_trim_lower_bound;
     m->newest_map = superblock.get_newest_map();