Attempt to silence bogus compiler warning: "Potential null pointer dereference"

diff --git a/tests/server/tftpd.c b/tests/server/tftpd.c
index 6014842..f3e521b 100644 (file)
--- a/tests/server/tftpd.c
+++ b/tests/server/tftpd.c
@@ -623,7 +623,7 @@ again:
   /* store input protocol */
   fprintf(server, "filename: %s\n", filename);
 
-  for (cp = mode; *cp; cp++)
+  for (cp = mode; cp && *cp; cp++)
     if(ISUPPER(*cp))
       *cp = (char)tolower((int)*cp);