Merge pull request #418 from agnat/fix_get_file_size_bug

[Bugfix] Actually invoke the user-supplied function instead of subtracting from a pointer...

tiny_gltf.h

@@ -301,6 +301,9 @@ class Value {
   }
   explicit Value(std::string &&s)
       : type_(STRING_TYPE), string_value_(std::move(s)) {}
+  explicit Value(const char *s) : type_(STRING_TYPE) {
+    string_value_ = s;
+  }
   explicit Value(const unsigned char *p, size_t n) : type_(BINARY_TYPE) {
     binary_value_.resize(n);
     memcpy(binary_value_.data(), p, n);
@@ -2422,7 +2425,7 @@ static bool LoadExternalFile(std::vector<unsigned char> *out, std::string *err,
 
     size_t file_size{0};
     std::string _err;
-    bool ok = fs-GetFileSizeInBytes(&file_size, &_err, filepath, fs->user_data);
+    bool ok = fs->GetFileSizeInBytes(&file_size, &_err, filepath, fs->user_data);
     if (!ok) {
       if (_err.size()) {
         if (failMsgOut) {
@@ -7155,7 +7158,7 @@ static void SerializeGltfAnimationChannel(const AnimationChannel &channel,
   {
     detail::json target;
 
-    if (channel.target_node > 0) {
+    if (channel.target_node >= 0) {
       SerializeNumberProperty("node", channel.target_node, target);
     }