Macro Efficiency

[Spawnova]

I've made a macro below that uses either my ground or flying mount depending on the area and it took just about the entire 255 characters so I was wondering if anyone knew any tips or tricks to condense it so I could learn for future cases.

My code:

/run local p="MOUNT"; 
for i=1,GetNumCompanions(p) do 
    local f=IsFlyableArea(); 
    local _,v=GetCompanionInfo(p,i); 
    if v=="Obsidian Nightwing" and f==1 then 
        CallCompanion(p,i) 
    elseif v=="Vicious Skeletal Warhorse" then 
        CallCompanion(p,i) 
    end 
end

There is tabbing just for readability normally it would be one line.