util/VarSize: use plain malloc()

src/util/VarSize.hxx

@@ -30,7 +30,6 @@
 #ifndef MPD_VAR_SIZE_HXX
 #define MPD_VAR_SIZE_HXX
 
-#include "Alloc.hxx"
 #include "Compiler.h"
 
 #include <type_traits>
@@ -61,7 +60,9 @@ NewVarSize(size_t declared_tail_size, size_t real_tail_size, Args&&... args)
 	size_t size = sizeof(T) - declared_tail_size + real_tail_size;
 
 	/* allocate memory */
-	T *instance = (T *)xalloc(size);
+	T *instance = (T *)malloc(size);
+	if (instance == nullptr)
+		throw std::bad_alloc{};
 
 	/* call the constructor */
 	new(instance) T(std::forward<Args>(args)...);