Add info about patching the pouchInit memory leak to the user manual

Author: Zephiles

USER_MANUAL.md

@@ -128,3 +128,4 @@ There are several other changes that have been made outside of the menu:
    * In some instances where the game tries to apply light effects to partners and/or followers, but one or neither of them are actually spawned, then they will be spawned automatically. When the game needs to spawn a partner for this, it will spawn Goombella. When it needs to spawn a follower for this, it will spawn Gus.
    * When defeating Blooper with an attack that causes both the body and the left tentacle to be defeated at roughly the same time.
 6. The cutscene before the final Shadow Queen fight has been adjusted to prevent one of the game's heaps from becoming corrupted. The change is that less textboxes will appear at the start of the cutscene.
+7. A memory leak that would occur when starting a new file has been fixed. This specific memory leak would occur when allocating memory that would be used for the inventory, as the game doesn't check if the memory has already been allocated or not.