Fixed TypeError: Cannot read property 'value' of undefined to resolve #…

…35.

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Signed-off-by: Carles Tubio <ctubio@users.noreply.github.com>

Free Software Free Society

To support commits by ctubio,
you can buy-me-a-drink with a small git tip at:
  1GitTipgxvKB3zjCLXRcSgDhC9pivkpc7u

I promise to drink chocolate milk in the development of the next commit.

To request new features or in case this commit breaks something for you,
please create a new github issue with all possible details,
but never share your API Keys!

Signed-off-by: Carles Tubio <ctubio@users.noreply.github.com>

src/server/fair-value.ts

@@ -27,7 +27,7 @@ export class FairValueEngine {
     private _publisher: Publish.Publisher,
     initRfv: Models.RegularFairValue[]
   ) {
-    if (initRfv !== null)
+    if (initRfv !== null && initRfv.length)
       this.latestFairValue = new Models.FairValue(initRfv[0].value, initRfv[0].time);
 
     filtration.FilteredMarketChanged.on(() => this.recalcFairValue(filtration.latestFilteredMarket));