[gnome-maps] transitTweaks: Avoid referencing non-existing property

[Marcus Lundblad <mlundblad src gnome org>]

commit 0ce592eef3361da19d6eba895a8b336e7e82caaf
Author: Marcus Lundblad <ml update uu se>
Date:   Mon Nov 4 20:23:10 2019 +0100

    transitTweaks: Avoid referencing non-existing property
    
    Avoid referencing non-existing route tweak property
    from JSON definition to avoid an error output.

 src/transitTweaks.js | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)
---
diff --git a/src/transitTweaks.js b/src/transitTweaks.js
index 78f666ca..578c5179 100644
--- a/src/transitTweaks.js
+++ b/src/transitTweaks.js
@@ -116,7 +116,7 @@ var TransitTweaks = class {
                 let tweakToApply;
                 let bboxTweaks = routeTypeTweaks.bboxes;
                 let routeTweaks = routeTypeTweaks.routes ?
-                                  routeTypeTweaks.routes[leg.route] : null;
+                                  routeTypeTweaks.routes[leg.route] || null : null;
                 let routePatternTweaks = routeTypeTweaks.routePatterns;
 
                 // first check for boundingbox-specific tweaks