MFstable/10 r243346,r291761:

r243346 (by emaste):

Non-void function should return a value.

Found by: clang

r291761:

MFC r291359,r291362:

r291359:

Skip over lines that start with # (comments)

r291362:

r291359 was incorrect. Skip over tokens that start with `#' as fgetln can
return more than one '\n' delimited line in a buffer

Handle empty lines too, just in case