STY: Return expression rather than a temporary variable.
STY: Return expression rather than a temporary variable.

Clean up of args_reduce returning the introspected list directly rather
than via a temporary variable. Fix comments.

scipy/scipy,mdhaber/scipy,ilayn/scipy,Stefan-Endres/scipy,perimosocordiae/scipy,matthew-brett/scipy,e-q/scipy,grlee77/scipy,andyfaff/scipy,matthew-brett/scipy,e-q/scipy,anntzer/scipy,ilayn/scipy,anntzer/scipy,e-q/scipy,rgommers/scipy,scipy/scipy,perimosocordiae/scipy,endolith/scipy,endolith/scipy,andyfaff/scipy,mdhaber/scipy,ilayn/scipy,zerothi/scipy,rgommers/scipy,Eric89GXL/scipy,ilayn/scipy,WarrenWeckesser/scipy,andyfaff/scipy,endolith/scipy,vigna/scipy,Eric89GXL/scipy,mdhaber/scipy,zerothi/scipy,Stefan-Endres/scipy,grlee77/scipy,e-q/scipy,anntzer/scipy,andyfaff/scipy,rgommers/scipy,grlee77/scipy,matthew-brett/scipy,ilayn/scipy,zerothi/scipy,anntzer/scipy,vigna/scipy,perimosocordiae/scipy,anntzer/scipy,WarrenWeckesser/scipy,Eric89GXL/scipy,Stefan-Endres/scipy,Eric89GXL/scipy,anntzer/scipy,mdhaber/scipy,ilayn/scipy,perimosocordiae/scipy,tylerjereddy/scipy,vigna/scipy,tylerjereddy/scipy,zerothi/scipy,tylerjereddy/scipy,Eric89GXL/scipy,Stefan-Endres/scipy,grlee77/scipy,WarrenWeckesser/scipy,Stefan-Endres/scipy,scipy/scipy,tylerjereddy/scipy,Stefan-Endres/scipy,rgommers/scipy,rgommers/scipy,endolith/scipy,mdhaber/scipy,tylerjereddy/scipy,matthew-brett/scipy,scipy/scipy,mdhaber/scipy,scipy/scipy,vigna/scipy,endolith/scipy,andyfaff/scipy,Eric89GXL/scipy,WarrenWeckesser/scipy,perimosocordiae/scipy,zerothi/scipy,grlee77/scipy,scipy/scipy,perimosocordiae/scipy,WarrenWeckesser/scipy,vigna/scipy,zerothi/scipy,e-q/scipy,andyfaff/scipy,matthew-brett/scipy,WarrenWeckesser/scipy,endolith/scipy