auth: exit with 0 on --version, like dnsdist and recursor do

diff --git a/pdns/auth-main.cc b/pdns/auth-main.cc
index 559e1f29c358a6656b198e6a5b63bdbf0ce385f9..143fb2fb8d7b06ac28b4cdf8741a53ad97c2ee87 100644 (file)
--- a/pdns/auth-main.cc
+++ b/pdns/auth-main.cc
@@ -1219,7 +1219,7 @@ int main(int argc, char** argv)
     if (::arg().mustDo("version")) {
       showProductVersion();
       showBuildConfiguration();
-      exit(99);
+      return 0;
     }
 
     if (::arg()["config-name"] != "")