crimson/.../replicated_request: hold pg ref until complete() resolves

02b70a6 moved the call to complete() into the finally block,
so we need to hold a reference to the pg until the complete()
resolves.

Signed-off-by: Samuel Just <[email protected]>

Author: athanatos

src/crimson/osd/osd_operations/replicated_request.cc

@@ -107,10 +107,11 @@ seastar::future<> RepRequest::with_pg(
     return with_pg_interruptible(pg);
   }, [](std::exception_ptr) {
     return seastar::now();
-  }, pg, pg->get_osdmap_epoch()).finally([this, ref=std::move(ref)]() mutable {
+  }, pg, pg->get_osdmap_epoch()
+  ).finally([this, pg, ref=std::move(ref)]() mutable {
     logger().debug("{}: exit", *this);
     return handle.complete(
-    ).finally([ref=std::move(ref)] {});
+    ).finally([ref=std::move(ref), pg=std::move(pg)] {});
   });
 }