fix error when triggering mouse event with modifier
fix error when triggering mouse event with modifier

modifer is the value in the table, so the index to convert should be -1
instead of -2

asmagill/hammerspoon,Hammerspoon/hammerspoon,latenitefilms/hammerspoon,CommandPost/CommandPost-App,CommandPost/CommandPost-App,latenitefilms/hammerspoon,cmsj/hammerspoon,asmagill/hammerspoon,asmagill/hammerspoon,Habbie/hammerspoon,cmsj/hammerspoon,Habbie/hammerspoon,Hammerspoon/hammerspoon,asmagill/hammerspoon,Habbie/hammerspoon,Habbie/hammerspoon,cmsj/hammerspoon,Hammerspoon/hammerspoon,Habbie/hammerspoon,cmsj/hammerspoon,Hammerspoon/hammerspoon,latenitefilms/hammerspoon,CommandPost/CommandPost-App,CommandPost/CommandPost-App,cmsj/hammerspoon,CommandPost/CommandPost-App,asmagill/hammerspoon,Hammerspoon/hammerspoon,latenitefilms/hammerspoon,Habbie/hammerspoon,Hammerspoon/hammerspoon,CommandPost/CommandPost-App,cmsj/hammerspoon,latenitefilms/hammerspoon,latenitefilms/hammerspoon,asmagill/hammerspoon