osdc/Objecter: prval optional for listsnaps

Signed-off-by: Sage Weil <sage@inktank.com>

diff --git a/src/osdc/Objecter.h b/src/osdc/Objecter.h
index 912f00d91e53114d68e047925fa2715edf13a6fb..2622c950eb5c902bd4cd8884ca2ca42a50321fd0 100644 (file)
--- a/src/osdc/Objecter.h
+++ b/src/osdc/Objecter.h
@@ -374,7 +374,8 @@ struct ObjectOperation {
               psnaps->clones.push_back(clone);
             }
           }
-          *prval = 0;
+          if (prval)
+           *prval = 0;
        }
        catch (buffer::error& e) {
          if (prval)