osd/HitSet: fix copy ctor

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

diff --git a/src/osd/HitSet.h b/src/osd/HitSet.h
index 1eda877a602853c515746cacb083e8b74de6979a..d30c9b712936849f956c296c2b2a776c26dce5de 100644 (file)
--- a/src/osd/HitSet.h
+++ b/src/osd/HitSet.h
@@ -119,7 +119,10 @@ public:
 
   HitSet(const HitSet& o) {
     sealed = o.sealed;
-    impl.reset(o.impl->clone());
+    if (o.impl)
+      impl.reset(o.impl->clone());
+    else
+      impl.reset(NULL);
   }
   const HitSet& operator=(const HitSet& o) {
     sealed = o.sealed;