testing: avoid unlikely fd leak

If opening the server log file returned 0 as fd, the writing was
skipped and the file was not closed. Found by Klocwork, unrealistic in
practice.

1 files changed, 1 insertions, 1 deletions

diff --git a/test/ClientTest.cpp b/test/ClientTest.cpp
index e8c5c48a..5c2ec0df 100644
--- a/test/ClientTest.cpp
+++ b/test/ClientTest.cpp
@@ -6348,7 +6348,7 @@ void ClientTest::postSync(int res, const std::string &logname)
 
         if (fd >= 0) {
             int out = open((logname + ".server.log").c_str(), O_WRONLY|O_CREAT, S_IRUSR|S_IWUSR|S_IRGRP|S_IWGRP);
-            if (out) {
+            if (out >= 0) {
                 char buffer[4096];
                 bool cont = true;
                 ssize_t len;