oops, I broke the nsec3param unit test. fixed.

git-svn-id: svn://bind10.isc.org/svn/bind10/trunk@1146 e5f2f494-b856-4b98-b285-d166d9295462

src/lib/dns/rdata/generic/nsec3param_51.cc

@@ -45,7 +45,7 @@ struct NSEC3PARAMImpl {
     uint8_t hashalg_;
     uint8_t flags_;
     uint16_t iterations_;
-    const vector<uint8_t>& salt_;
+    vector<uint8_t> salt_;
 };
 
 NSEC3PARAM::NSEC3PARAM(const string& nsec3param_str) :