Utilities: Fix incorrect error handling in traceroute

The result will be -1 on error, and the error value will be stored in
errno. PVS-Studio found this because result it saw result < 0 and new
EFAULT is < 0, so this could never be true.

Userland/Utilities/traceroute.cpp

@@ -114,7 +114,7 @@ int main(int argc, char** argv)
             size_t peer_address_size = sizeof(peer_address);
             int result = recvfrom(fd, &response, sizeof(response), 0, (sockaddr*)&peer_address, (socklen_t*)&peer_address_size);
             if (result < 0) {
-                if (result == EAGAIN)
+                if (errno == EAGAIN)
                     return -1;
                 continue;
             }