Suppress clang warnings.

Makefile

@@ -1,6 +1,6 @@
 
 # Use this for strict compilation check(will work on clang 3.8+)
-#EXTRA_CXXFLAGS := -fsanitize=address -Wall -Werror -Weverything -Wno-c++11-long-long
+#EXTRA_CXXFLAGS := -fsanitize=address -Wall -Werror -Weverything -Wno-c++11-long-long -Wno-c++98-compat
 
 all:
 	clang++  $(EXTRA_CXXFLAGS) -std=c++11 -g -O0 -o loader_example loader_example.cc

loader_example.cc

@@ -262,7 +262,7 @@ static std::string PrintValue(const std::string &name,
   } else if (value.IsArray()) {
     ss << Indent(indent) << name << " [ ";
     for (size_t i = 0; i < value.Size(); i++) {
-      ss << PrintValue("", value.Get(i), indent + 1, /* tag */false);
+      ss << PrintValue("", value.Get(int(i)), indent + 1, /* tag */false);
       if (i != (value.ArrayLen()-1)) {
         ss << ", ";
       }

tiny_gltf.h

@@ -1610,7 +1610,7 @@ static bool ParseJsonAsValue(Value* ret, const json &o)
       break;
     case json::value_t::null:
     case json::value_t::discarded:
-    default:
+    //default:
       break;
   }
   if (ret)
@@ -1905,6 +1905,8 @@ static bool ParseParameterProperty(Parameter *param, std::string *err,
 
 static bool ParseExtensionsProperty(ExtensionMap *ret, std::string* err, const json &o)
 {
+  (void)err;
+
   json::const_iterator it = o.find("extensions");
   if (it == o.end()) {
     return false;