Describe the bug
In classic version, lua error when enabled the search in tooltip checkbox.

To Reproduce
Steps to reproduce the behavior:

1. Go to any merchant
2. Talk with NPC
3. enable the search in tooltip checkbox
4. See error:

Interface\AddOns\xMerchant\core.lua:821: Usage: PlaySound(soundKitID, optional["SFX","Music","Ambience", "Dialog" or "Master"], [forceNoDuplicates, runFinishCallback])

Expected behavior
No error

Screenshots
n/a

Version:

• wow 1.14.3
• Server locale region US
• OS Win

released 1.10.2-release-wotlk for WotLK, so it's now fixed in Patch-classic-wrath

Released 1.10.3

• Fixed compatible issues for all patches.