cliopts: don't assign progname if NULL
cliopts: don't assign progname if NULL

Logic should be inverted

Change-Id: Iec46673a75801adff5a565dd361255611f427e3a
Reviewed-on: http://review.couchbase.org/39094
Reviewed-by: Brett Lawson <c8c4369773d7d7226e031f0c4af62e3f38a08510@gmail.com>
Tested-by: Mark Nunberg <e7d42768707bf23038325b0b68d4b577e5f6064a@haskalah.org>

avsej/libcouchbase,couchbase/libcouchbase,kojiromike/libcouchbase,mody/libcouchbase,couchbase/libcouchbase,couchbase/libcouchbase,avsej/libcouchbase,mody/libcouchbase,signmotion/libcouchbase,avsej/libcouchbase,mnunberg/libcouchbase,mnunberg/libcouchbase,PureSwift/libcouchbase,avsej/libcouchbase,couchbase/libcouchbase,senthilkumaranb/libcouchbase,kojiromike/libcouchbase,PureSwift/libcouchbase,PureSwift/libcouchbase,mody/libcouchbase,senthilkumaranb/libcouchbase,couchbase/libcouchbase,avsej/libcouchbase,couchbase/libcouchbase,couchbase/libcouchbase,PureSwift/libcouchbase,maxim-ky/libcouchbase,mnunberg/libcouchbase,mnunberg/libcouchbase,avsej/libcouchbase,mnunberg/libcouchbase,senthilkumaranb/libcouchbase,mody/libcouchbase,maxim-ky/libcouchbase,signmotion/libcouchbase,signmotion/libcouchbase,senthilkumaranb/libcouchbase,kojiromike/libcouchbase,avsej/libcouchbase,maxim-ky/libcouchbase,maxim-ky/libcouchbase,signmotion/libcouchbase,kojiromike/libcouchbase