coverity CID 398388: useless <0 check on unsigned value

(cherry picked from commit d86200ac489e08be1831b524d2268b2a1b0f222f)

diff --git a/pdns/dnsdistdist/dnsdist-discovery.cc b/pdns/dnsdistdist/dnsdist-discovery.cc
index 3c39b97ee266b9977d82703c54c61ee1b525bbb2..390fce820e62f8e22a72a24b22b4f18822ba6f2e 100644 (file)
--- a/pdns/dnsdistdist/dnsdist-discovery.cc
+++ b/pdns/dnsdistdist/dnsdist-discovery.cc
@@ -275,7 +275,7 @@ bool ServiceDiscovery::getDiscoveredConfig(const UpgradeableBackend& upgradeable
     const struct timeval remainingTime = {.tv_sec = backend->d_config.tcpRecvTimeout, .tv_usec = 0};
     uint16_t responseSize = 0;
     auto got = readn2WithTimeout(sock.getHandle(), &responseSize, sizeof(responseSize), remainingTime);
-    if (got < 0 || static_cast<size_t>(got) != sizeof(responseSize)) {
+    if (static_cast<size_t>(got) != sizeof(responseSize)) {
       if (g_verbose) {
         warnlog("Error while waiting for the ADD upgrade response size from backend %s: %d", addr.toStringWithPort(), got);
       }