gpsd: fix gpsd init script
Replace return with exit where appropriate.
Current init script uses return outside of functions resulting in
warnings such as the following when using bash as interpreter:
/etc/init.d/gpsd: line 98: return: can only `return' from a function or sourced script
(From meta-openembedded rev:
d96d51e1eb4c086db781eb89b17d3b4ddbac7d13)
Signed-off-by: Johan Hovold <johan.hovold@lundinova.se>
Signed-off-by: Koen Kooi <koen@dominion.thruhere.net>
Signed-off-by: Patrick Ohly <patrick.ohly@intel.com>