tests/server: make string literals const

assign string literals to const char * instead of char * in order to
avoid a lot of these warnings:
cast from 'const char *' to 'char *' drops const qualifier
[-Wcast-qual]

1 files changed, 3 insertions, 3 deletions

diff --git a/tests/server/fake_ntlm.c b/tests/server/fake_ntlm.c
index 87118b315..b5f375e46 100644
--- a/tests/server/fake_ntlm.c
+++ b/tests/server/fake_ntlm.c
@@ -120,9 +120,9 @@ int main(int argc, char *argv[])
   long testnum;
   const char *env;
   int arg = 1;
-  char *helper_user = (char *)"unknown";
-  char *helper_proto = (char *)"unknown";
-  char *helper_domain = (char *)"unknown";
+  const char *helper_user = "unknown";
+  const char *helper_proto = "unknown";
+  const char *helper_domain = "unknown";
   bool use_cached_creds = FALSE;
   char *msgbuf;