🐛 Fix uninitialized values for items generated in a loop

Fixes #1121

Source/items.cpp

@@ -5328,13 +5328,14 @@ void CreateSpellBook(int x, int y, int ispell, BOOL sendmsg, BOOL delta)
 		return;
 
 	int ii = AllocateItem();
-	GetSuperItemSpace(x, y, ii);
 
 	while (true) {
+		memset(&item[ii], 0, sizeof(*item));
 		SetupAllItems(ii, idx, AdvanceRndSeed(), 2 * lvl, 1, TRUE, FALSE, delta);
 		if (item[ii]._iMiscId == IMISC_BOOK && item[ii]._iSpell == ispell)
 			break;
 	}
+	GetSuperItemSpace(x, y, ii);
 
 	if (sendmsg)
 		NetSendCmdDItem(FALSE, ii);
@@ -5348,16 +5349,17 @@ static void CreateMagicItem(int x, int y, int lvl, int imisc, int imid, int icur
 		return;
 
 	int ii = AllocateItem();
-	GetSuperItemSpace(x, y, ii);
 	int idx = RndTypeItems(imisc, imid, lvl);
 
 	while (true) {
+		memset(&item[ii], 0, sizeof(*item));
 		SetupAllItems(ii, idx, AdvanceRndSeed(), 2 * lvl, 1, TRUE, FALSE, delta);
 		if (item[ii]._iCurs == icurs)
 			break;
 
 		idx = RndTypeItems(imisc, imid, lvl);
 	}
+	GetSuperItemSpace(x, y, ii);
 
 	if (sendmsg)
 		NetSendCmdDItem(FALSE, ii);