Made a parameter const

lib/netrc.c

@@ -72,7 +72,7 @@ enum {
 #define PASSWORDSIZE 64
 
 /* returns -1 on failure, 0 if the host is found, 1 is the host isn't found */
-int Curl_parsenetrc(char *host,
+int Curl_parsenetrc(const char *host,
                     char *login,
                     char *password,
                     char *netrcfile)

lib/netrc.h

@@ -22,7 +22,7 @@
  *
  * $Id$
  ***************************************************************************/
-int Curl_parsenetrc(char *host,
+int Curl_parsenetrc(const char *host,
                     char *login,
                     char *password,
                     char *filename);