[master] Corrected two minor cppchecks.

src/bin/dhcp4/tests/d2_unittest.cc

@@ -41,7 +41,7 @@ D2Dhcpv4Srv::d2ClientErrorHandler(const
 const bool Dhcp4SrvD2Test::SHOULD_PASS;
 const bool Dhcp4SrvD2Test::SHOULD_FAIL;
 
-Dhcp4SrvD2Test::Dhcp4SrvD2Test() {
+Dhcp4SrvD2Test::Dhcp4SrvD2Test() : rcode_(-1) {
 }
 
 Dhcp4SrvD2Test::~Dhcp4SrvD2Test() {

src/lib/dhcpsrv/tests/d2_udp_unittest.cc

@@ -106,6 +106,7 @@ public:
         FD_ZERO(&read_fds);
 
         int select_fd = -1;
+        // cppcheck-suppress redundantAssignment
         ASSERT_NO_THROW(select_fd = getSelectFd());
 
         FD_SET(select_fd,  &read_fds);