reverted return in getWurflDeviceType

Author: andreacastello

extra/modules/wurfl-devicedetection/src/main/java/org/prebid/server/hooks/modules/com/scientiamobile/wurfl/devicedetection/v1/OrtbDeviceUpdater.java

@@ -132,7 +132,6 @@ private Integer getWurflDeviceType() {
             }
         } catch (CapabilityNotDefinedException | VirtualCapabilityNotDefinedException | NumberFormatException e) {
             logger.warn("Failed to determine device type from WURFL device capabilities", e);
-            return null;
         }
         return null;
     }