fixed the same bug as before (variant missing remove_cvref)

include/gp/variant.hpp

@@ -54,7 +54,7 @@ namespace gp{
 
 		template<typename U, std::enable_if_t<list_contains_class<gp::remove_cvref_t<U>,T...>::value,int> = 0>
 		fixed_variant(U&& value)
-		: index{r_index_of<U, T...>::value}
+		: index{r_index_of<gp::remove_cvref_t<U>, T...>::value}
 		{
 			using actual = gp::remove_cvref_t<U>;
 			dtor = gp::function<void(void*)>([](void* thing){
@@ -140,7 +140,7 @@ namespace gp{
 			{
 				dtor((void*)buffer);
 			}
-			index = r_index_of<U, T...>::value;
+			index = r_index_of<gp::remove_cvref_t<U>, T...>::value;
 			new(buffer) U(value);
 			dtor = gp::function([](void* thing){((U*)thing)->~U();}, nullopt);
 			cpytor = gp::function<void(void*, void*)>([](void* src, void* dest){new(dest) U(*(U*)src);}, nullopt);
@@ -155,7 +155,7 @@ namespace gp{
 				dtor((void*)buffer);
 			}
 			new(buffer) U(gp::move(value));
-			index = r_index_of<U, T...>::value;
+			index = r_index_of<gp::remove_cvref_t<U>, T...>::value;
 			dtor = gp::function([](void* thing){((U*)thing)->~U();}, nullopt);
 			cpytor = gp::function<void(void*, void*)>([](void* src, void* dest){new(dest) U(*(U*)src);}, nullopt);
 			mvtor = gp::function<void(void*, void*)>([](void* src, void* dest){new(dest) U(gp::move(*(U*)src));}, nullopt);
@@ -175,7 +175,7 @@ namespace gp{
 		{
 			if constexpr (gp_config::has_exceptions)
 			{
-				if(r_index_of<U, T...>::value != index)
+				if(r_index_of<gp::remove_cvref_t<U>, T...>::value != index)
 				{
 					throw bad_variant_access<U>{};
 				}
@@ -186,7 +186,7 @@ namespace gp{
 		template<typename U>
 		constexpr bool is_a()
 		{
-			if(r_index_of<U, T...>::value == index)
+			if(r_index_of<gp::remove_cvref_t<U>, T...>::value == index)
 			{
 				return true;
 			}