java/*: add noexcept

src/java/Object.hxx

@@ -1,5 +1,5 @@
 /*
- * Copyright (C) 2010-2011 Max Kellermann <max.kellermann@gmail.com>
+ * Copyright 2010-2018 Max Kellermann <max.kellermann@gmail.com>
  *
  * Redistribution and use in source and binary forms, with or without
  * modification, are permitted provided that the following conditions
@@ -48,7 +48,8 @@ namespace Java {
 		 */
 		Object() = default;
 
-		Object(JNIEnv *env, jobject obj):GlobalRef<jobject>(env, obj) {}
+		Object(JNIEnv *env, jobject obj) noexcept
+			:GlobalRef<jobject>(env, obj) {}
 	};
 }