Fix generic type search

SpigotCore_Main/src/com/comphenix/tinyprotocol/Reflection.java

@@ -189,7 +189,7 @@ public final class Reflection {
 			return false;
 
 		if(parameters.length > 0) {
-			Class<?>[] arguments = (Class<?>[]) ((ParameterizedType)field.getType().getGenericSuperclass()).getActualTypeArguments();
+			Class<?>[] arguments = (Class<?>[]) ((ParameterizedType)field.getGenericType()).getActualTypeArguments();
 
 			for(int i = 0; i < parameters.length; i++) {
 				if(arguments[i] != parameters[i])