* Make json_object_from_file take const char *filename

Spotted by Vikram Raj V, vsagar at attinteractive dot com


git-svn-id: http://svn.metaparadigm.com/svn/json-c/trunk@55 327403b1-1117-474d-bef2-5cb71233fd97

json_util.c

@@ -52,7 +52,7 @@
 #include "json_tokener.h"
 #include "json_util.h"
 
-struct json_object* json_object_from_file(char *filename)
+struct json_object* json_object_from_file(const char *filename)
 {
   struct printbuf *pb;
   struct json_object *obj;

json_util.h

@@ -21,7 +21,7 @@ extern "C" {
 #define JSON_FILE_BUF_SIZE 4096
 
 /* utility functions */
-extern struct json_object* json_object_from_file(char *filename);
+extern struct json_object* json_object_from_file(const char *filename);
 extern int json_object_to_file(char *filename, struct json_object *obj);
 
 #ifdef __cplusplus