[jsligo] If instruction requires extra `;`

if instruction requires extra ;.

Example:

const main = (action: parameter, store: storage) : [ list<operation> , storage ] => {
  if (true) { 

 return [
   list([]),    // No operations
   (match (action, {
    Increment: n => add (store, n),
    Decrement: n => sub (store, n),
    Reset:     ()  => 0}))
  ]
  }; // <= here you wouldn't need a `;` . If you remove it, it doesn't compile
  failwith("Not Allowed");
};