[2384] Remove unnecessary cast

diff --git a/src/lib/dns/rrttl.cc b/src/lib/dns/rrttl.cc
index 73439906de9a91e4db9ae2ba12144d20fc51b290..c01b9dae23f468308e4230befb84b7e04757b396 100644 (file)
--- a/src/lib/dns/rrttl.cc
+++ b/src/lib/dns/rrttl.cc
@@ -110,7 +110,7 @@ RRTTL::RRTTL(const std::string& ttlstr) {
     }
 
     if (val >= 0 && val <= 0xffffffff) {
-        ttlval_ = static_cast<uint32_t>(val);
+        ttlval_ = val;
     } else {
         isc_throw(InvalidRRTTL, "TTL out of range: " << ttlstr);
     }