fix(server/inventory): pcall when saving inventories

Possibly fix some cases of an error thrown causing isSaving
to never reset to false? Never repro'd, but still best to fix.

modules/inventory/server.lua

@@ -2270,7 +2270,6 @@ local inventoryClearTime = GetConvarInt('inventory:cleartime', 5) * 60
 local function saveInventories(clearInventories)
  if isSaving then return end
 
- isSaving = true
  local time = os.time()
  local parameters = { {}, {}, {}, {} }
  local total = { 0, 0, 0, 0, 0 }
@@ -2295,10 +2294,12 @@ local function saveInventories(clearInventories)
  end
 
  if total[5] > 0 then
- db.saveInventories(parameters[1], parameters[2], parameters[3], parameters[4], total)
- end
+ isSaving = true
+ local ok, err = pcall(db.saveInventories, parameters[1], parameters[2], parameters[3], parameters[4], total)
+ isSaving = false
 
- isSaving = false
+ if not ok and err then return lib.print.error(err) end
+ end
 
  if not clearInventories then return end