virTypedParamsDeserialize: set nparams to 0 in case of an error

Signed-off-by: NMarc Hartmayer <mhartmay@linux.ibm.com>
Reviewed-by: NJohn Ferlan <jferlan@redhat.com>

src/util/virtypedparam.c

@@ -1467,6 +1467,7 @@ virTypedParamsDeserialize(virTypedParameterRemotePtr remote_params,
         } else {
             virTypedParamsFree(*params, i);
             *params = NULL;
+            *nparams = 0;
         }
     }
     return rv;