[PATCH v1 proxmox-backup 7/8] tree-wide: add empty use<> bounds to return position impl traits

[Robert Obkircher <r.obkircher@proxmox.com>]

The 2024 edition allows the hidden types of a return position impl
trait to use any generic parameter in scope.

Explicitly opt out of capturing more lifetimes than necessary, so the
callers continue to compile.

Signed-off-by: Robert Obkircher <r.obkircher@proxmox.com>
---
 pbs-client/src/http_client.rs            | 2 +-
 proxmox-file-restore/src/block_driver.rs | 2 +-
 2 files changed, 2 insertions(+), 2 deletions(-)

diff --git a/pbs-client/src/http_client.rs b/pbs-client/src/http_client.rs
index a6fcafcfd..dc7c81c38 100644
--- a/pbs-client/src/http_client.rs
+++ b/pbs-client/src/http_client.rs
@@ -1175,7 +1175,7 @@ impl H2Client {
         &self,
         request: Request<()>,
         data: Option<bytes::Bytes>,
-    ) -> impl Future<Output = Result<h2::client::ResponseFuture, Error>> {
+    ) -> impl Future<Output = Result<h2::client::ResponseFuture, Error>> + use<> {
         self.h2
             .clone()
             .ready()
diff --git a/proxmox-file-restore/src/block_driver.rs b/proxmox-file-restore/src/block_driver.rs
index a497cacad..8e4155c4e 100644
--- a/proxmox-file-restore/src/block_driver.rs
+++ b/proxmox-file-restore/src/block_driver.rs
@@ -78,7 +78,7 @@ pub enum BlockDriverType {
 }
 
 impl BlockDriverType {
-    fn resolve(&self) -> impl BlockRestoreDriver {
+    fn resolve(&self) -> impl BlockRestoreDriver + use<> {
         match self {
             BlockDriverType::Qemu => QemuBlockDriver {},
         }
-- 
2.47.3