Change duplicated function name

When linking statically (in our case on Android) and because image_view is linked against image_transport, the increment function is duplicated (https://github.com/ros-perception/image_common/blob/483312b85671ec61e8aa15f96a52e0e493df53d2/image_transport/src/camera_subscriber.cpp#L41).

Is this the correct approach or would someone suggest to handle differently?