tests/server/util.h: add extern to silence compiler warning

Follow-up from a3b0699d5c1

diff --git a/tests/server/util.h b/tests/server/util.h
index b64c1d5a7bdf9eb62db03fcd13765eb1471d6d20..629539205ad846e77cf37e4cb201a7fc80bbc23b 100644 (file)
--- a/tests/server/util.h
+++ b/tests/server/util.h
@@ -38,6 +38,8 @@ extern const char *path;
 /* global variable, log file name */
 extern const char *serverlogfile;
 
+extern const char *cmdfile;
+
 #if defined(WIN32) || defined(_WIN32)
 #include <process.h>
 #include <fcntl.h>