Fix implicit cast from INSTANCE_SIZE_PADDED

o1heap/o1heap.c

@@ -148,7 +148,7 @@ struct O1HeapInstance
 
 /// The amount of space allocated for the heap instance.
 /// Its size is padded up to O1HEAP_ALIGNMENT to ensure correct alignment of the allocation arena that follows.
-#define INSTANCE_SIZE_PADDED (((uint32_t)sizeof(O1HeapInstance) + O1HEAP_ALIGNMENT - 1U) & ~(O1HEAP_ALIGNMENT - 1U))
+#define INSTANCE_SIZE_PADDED ((uint32_t)((sizeof(O1HeapInstance) + O1HEAP_ALIGNMENT - 1U) & ~(O1HEAP_ALIGNMENT - 1U)))
 
 static_assert(INSTANCE_SIZE_PADDED >= sizeof(O1HeapInstance), "Invalid instance footprint computation");
 static_assert((INSTANCE_SIZE_PADDED % O1HEAP_ALIGNMENT) == 0U, "Invalid instance footprint computation");