osd/OSD.cc: small cleanup. curmap will be assigned inside the follow…

…ing loops.

    Signed-off-by: Jie Wang <jie.wang@kylin-cloud.com>
    Reviewed-by: Kefu Chai <kchai@redhat.com>

src/osd/OSD.cc

@@ -9030,7 +9030,7 @@ void OSD::process_peering_events(
 {
   bool need_up_thru = false;
   epoch_t same_interval_since = 0;
-  OSDMapRef curmap = service.get_osdmap();
+  OSDMapRef curmap;
   PG::RecoveryCtx rctx = create_context();
   rctx.handle = &handle;
   for (list<PG*>::const_iterator i = pgs.begin();