Rearrange precondition checks for snapshot restore

diff --git a/client/snbk/TheBigThing.cc b/client/snbk/TheBigThing.cc
index 812cf807b233e98fcc72be2cf4f25146add6a2fb..4d20e5c6697bff5b508ecd02b4c91e3929b88d18 100644 (file)
--- a/client/snbk/TheBigThing.cc
+++ b/client/snbk/TheBigThing.cc
@@ -302,12 +302,12 @@ namespace snapper
        if (!quiet)
            cout << sformat(_("Restoring snapshot %d."), num) << '\n';
 
-       if (target_state != TargetState::VALID)
-           SN_THROW(Exception(_("Snapshot not on target.")));
-
        if (source_state != SourceState::MISSING)
            SN_THROW(Exception(_("Snapshot already on source.")));
 
+       if (target_state != TargetState::VALID)
+           SN_THROW(Exception(_("Snapshot not on target.")));
+
        // Copy the snapshot from the target to the source
        copy(backup_config, the_big_things,
             make_copy_specs(backup_config, the_big_things, CopyMode::TARGET_TO_SOURCE));