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, 2 insertions, 2 deletions

diff --git a/tests/server/sockfilt.c b/tests/server/sockfilt.c
index 78588d3ab..926784ff4 100644
--- a/tests/server/sockfilt.c
+++ b/tests/server/sockfilt.c
@@ -405,7 +405,7 @@ static ssize_t fullwrite(int filedes, const void *buffer, size_t nbytes)
   ssize_t nwrite = 0;
 
   do {
-    wc = write(filedes, (unsigned char *)buffer + nwrite, nbytes - nwrite);
+    wc = write(filedes, (const unsigned char *)buffer + nwrite, nbytes - nwrite);
 
     if(got_exit_signal) {
       logmsg("signalled to die");
@@ -1338,7 +1338,7 @@ int main(int argc, char *argv[])
   curl_socket_t sock = CURL_SOCKET_BAD;
   curl_socket_t msgsock = CURL_SOCKET_BAD;
   int wrotepidfile = 0;
-  char *pidname= (char *)".sockfilt.pid";
+  const char *pidname = ".sockfilt.pid";
   bool juggle_again;
   int rc;
   int error;