Make code better readable by replacing `if (rsp->ccode > 0)`
and 'if (rsp->ccode != 0)' with just `if (rsp->ccode)` as
rsp->ccode is anyway an unsigned byte and can't be negative.
Also replace 'if (rsp->ccode == 0)' with 'if (!rsp->ccode)'.
All these changes make lines shorter and easier to read as
a non-zero ccode is an indication of some failure, and so !ccode
naturally reads as 'no error'.
Signed-off-by: Alexander Amelkin <alexander@amelkin.msk.ru>
Return codes of functions should be either used or evaluated - always. This
merge is necessary for shell scripting to, eg. signal there was an error during
execution.
The delloem extension functions all return sane error codes, but they
are not used and not passed on. Fix it.
Signed-off-by: Thomas Renninger <trenn@suse.de>