Perform better error checking in json_tokener_parse_verbose and rewrite json_tokener_parse to use that instead of json_tokener_parse_ex.

Fix a typo in the string represenations of the json_tokener_error_depth error (s/to deep/too deep/)

json_tokener.c

@@ -47,7 +47,7 @@ static const char* json_false_str = "false";
 const char* json_tokener_errors[] = {
   "success",
   "continue",
-  "nesting to deep",
+  "nesting too deep",
   "unexpected end of data",
   "unexpected character",
   "null expected",
@@ -122,17 +122,10 @@ void json_tokener_reset(struct json_tokener *tok)
 
 struct json_object* json_tokener_parse(const char *str)
 {
-  struct json_tokener* tok;
-  struct json_object* obj;
-
-  tok = json_tokener_new();
-  if (!tok)
-    return NULL;
-  obj = json_tokener_parse_ex(tok, str, -1);
-  if(tok->err != json_tokener_success)
-    obj = NULL;
-  json_tokener_free(tok);
-  return obj;
+    enum json_tokener_error jerr_ignored;
+    struct json_object* obj;
+    obj = json_tokener_parse_verbose(str, &jerr_ignored);
+    return obj;
 }
 
 struct json_object* json_tokener_parse_verbose(const char *str, enum json_tokener_error *error)
@@ -141,9 +134,13 @@ struct json_object* json_tokener_parse_verbose(const char *str, enum json_tokene
     struct json_object* obj;
 
     tok = json_tokener_new();
+    if (!tok)
+      return NULL;
     obj = json_tokener_parse_ex(tok, str, -1);
     *error = tok->err;
     if(tok->err != json_tokener_success) {
+		if (obj != NULL)
+			json_object_put(obj);
         obj = NULL;
     }