message/mds: Fix client reconnect decode

Flip the conditional so that snap realms are
decoded, otherwise this results in an assertion
failure of the mds when a client attempts to
reconnect.

Signed-off-by: Sam Lang <sam.lang@inktank.com>
Reviewed-by: Greg Farnum <greg@inktank.com>

src/messages/MClientReconnect.h

@@ -94,7 +94,7 @@ public:
       for (map<inodeno_t,old_cap_reconnect_t>::iterator q = ocaps.begin(); q != ocaps.end(); q++)
 	caps[q->first] = q->second;
     }
-    while (p.end()) {
+    while (!p.end()) {
       realms.push_back(ceph_mds_snaprealm_reconnect());
       ::decode(realms.back(), p);
     }