Update assetBrowser.tscript

fix folder navigation in asset browser

fix found by Abbey

Templates/BaseGame/game/tools/assetBrowser/scripts/assetBrowser.tscript

@@ -2140,6 +2140,9 @@ function AssetBrowser::navigateTo(%this, %address, %historyNav)
    if(startsWith(%address, "/"))
       %address = strreplace(%address, "/", "");
       
+   // Safety
+   %address = strreplace(%address, "//", "/");
+      
    //Don't bother navigating if it's to the place we already are
    if(%this.dirHandler.currentAddress !$= %address)
    {
@@ -2853,4 +2856,4 @@ function AssetBrowserWindow::onResize(%this, %posX, %posY, %width, %height)
     else
         AssetBrowser-->assetList.fillRowFirst = false;
     AssetBrowser.rebuildAssetArray();
-}
+}