BUG: fix uninitialized use in lartg
BUG: fix uninitialized use in lartg

lartg returns the cosine as a double leaving the imaginary part
uninitialized while the code assumes it is a valid complex number.
Fix this by initializing the number. This fixes test failures on i386
and removes a bunch of valgrind errors.

ales-erjavec/scipy,vberaudi/scipy,Stefan-Endres/scipy,zaxliu/scipy,mingwpy/scipy,fredrikw/scipy,anielsen001/scipy,Newman101/scipy,anielsen001/scipy,pnedunuri/scipy,vigna/scipy,larsmans/scipy,maniteja123/scipy,sonnyhu/scipy,apbard/scipy,pyramania/scipy,andyfaff/scipy,anielsen001/scipy,WillieMaddox/scipy,fredrikw/scipy,befelix/scipy,woodscn/scipy,WillieMaddox/scipy,kleskjr/scipy,andyfaff/scipy,njwilson23/scipy,jjhelmus/scipy,pnedunuri/scipy,jakevdp/scipy,mdhaber/scipy,niknow/scipy,dominicelse/scipy,giorgiop/scipy,josephcslater/scipy,dominicelse/scipy,argriffing/scipy,fernand/scipy,gertingold/scipy,woodscn/scipy,chatcannon/scipy,fernand/scipy,giorgiop/scipy,felipebetancur/scipy,lhilt/scipy,Gillu13/scipy,Shaswat27/scipy,ilayn/scipy,niknow/scipy,njwilson23/scipy,dominicelse/scipy,ales-erjavec/scipy,perimosocordiae/scipy,arokem/scipy,zerothi/scipy,Gillu13/scipy,fredrikw/scipy,anntzer/scipy,endolith/scipy,apbard/scipy,nonhermitian/scipy,person142/scipy,gdooper/scipy,matthew-brett/scipy,anntzer/scipy,futurulus/scipy,e-q/scipy,Shaswat27/scipy,pnedunuri/scipy,tylerjereddy/scipy,njwilson23/scipy,giorgiop/scipy,Gillu13/scipy,Shaswat27/scipy,gef756/scipy,anntzer/scipy,pbrod/scipy,jakevdp/scipy,njwilson23/scipy,mikebenfield/scipy,bkendzior/scipy,mikebenfield/scipy,woodscn/scipy,vanpact/scipy,argriffing/scipy,bkendzior/scipy,jamestwebber/scipy,e-q/scipy,argriffing/scipy,pyramania/scipy,fredrikw/scipy,chatcannon/scipy,perimosocordiae/scipy,haudren/scipy,andim/scipy,befelix/scipy,jamestwebber/scipy,aarchiba/scipy,apbard/scipy,Eric89GXL/scipy,arokem/scipy,nonhermitian/scipy,matthew-brett/scipy,argriffing/scipy,ilayn/scipy,surhudm/scipy,vigna/scipy,jakevdp/scipy,futurulus/scipy,perimosocordiae/scipy,Stefan-Endres/scipy,perimosocordiae/scipy,matthewalbani/scipy,ales-erjavec/scipy,zerothi/scipy,WarrenWeckesser/scipy,maniteja123/scipy,Gillu13/scipy,scipy/scipy,mingwpy/scipy,zaxliu/scipy,Kamp9/scipy,Newman101/scipy,sriki18/scipy,mdhaber/scipy,behzadnouri/scipy,bkendzior/scipy,lhilt/scipy,jor-/scipy,pyramania/scipy,gef756/scipy,aeklant/scipy,anielsen001/scipy,woodscn/scipy,pyramania/scipy,rgommers/scipy,nonhermitian/scipy,andyfaff/scipy,chatcannon/scipy,vberaudi/scipy,matthew-brett/scipy,matthew-brett/scipy,pizzathief/scipy,WillieMaddox/scipy,pschella/scipy,ilayn/scipy,aarchiba/scipy,vanpact/scipy,endolith/scipy,jjhelmus/scipy,e-q/scipy,e-q/scipy,fernand/scipy,haudren/scipy,woodscn/scipy,mdhaber/scipy,haudren/scipy,kalvdans/scipy,WarrenWeckesser/scipy,niknow/scipy,vberaudi/scipy,tylerjereddy/scipy,jakevdp/scipy,WillieMaddox/scipy,pschella/scipy,fernand/scipy,Eric89GXL/scipy,nonhermitian/scipy,sriki18/scipy,vigna/scipy,pizzathief/scipy,vigna/scipy,minhlongdo/scipy,matthewalbani/scipy,surhudm/scipy,newemailjdm/scipy,nmayorov/scipy,maniteja123/scipy,Newman101/scipy,endolith/scipy,minhlongdo/scipy,newemailjdm/scipy,futurulus/scipy,minhlongdo/scipy,ilayn/scipy,jor-/scipy,pizzathief/scipy,mingwpy/scipy,jor-/scipy,minhlongdo/scipy,jjhelmus/scipy,pizzathief/scipy,befelix/scipy,apbard/scipy,sonnyhu/scipy,anielsen001/scipy,giorgiop/scipy,mdhaber/scipy,sonnyhu/scipy,mdhaber/scipy,endolith/scipy,Kamp9/scipy,kleskjr/scipy,futurulus/scipy,mingwpy/scipy,surhudm/scipy,haudren/scipy,maniteja123/scipy,gertingold/scipy,vanpact/scipy,giorgiop/scipy,jamestwebber/scipy,anntzer/scipy,newemailjdm/scipy,WillieMaddox/scipy,newemailjdm/scipy,pbrod/scipy,kalvdans/scipy,zaxliu/scipy,mdhaber/scipy,Newman101/scipy,josephcslater/scipy,matthewalbani/scipy,Newman101/scipy,befelix/scipy,arokem/scipy,gfyoung/scipy,giorgiop/scipy,WarrenWeckesser/scipy,pnedunuri/scipy,Gillu13/scipy,woodscn/scipy,larsmans/scipy,aarchiba/scipy,Shaswat27/scipy,scipy/scipy,gdooper/scipy,Stefan-Endres/scipy,nmayorov/scipy,maniteja123/scipy,rgommers/scipy,aeklant/scipy,Shaswat27/scipy,josephcslater/scipy,sriki18/scipy,ales-erjavec/scipy,andim/scipy,vberaudi/scipy,pnedunuri/scipy,pbrod/scipy,pschella/scipy,felipebetancur/scipy,person142/scipy,matthew-brett/scipy,lhilt/scipy,rgommers/scipy,bkendzior/scipy,larsmans/scipy,newemailjdm/scipy,lhilt/scipy,befelix/scipy,grlee77/scipy,apbard/scipy,sriki18/scipy,gef756/scipy,perimosocordiae/scipy,WillieMaddox/scipy,jamestwebber/scipy,nmayorov/scipy,jamestwebber/scipy,niknow/scipy,gfyoung/scipy,Kamp9/scipy,kleskjr/scipy,scipy/scipy,perimosocordiae/scipy,josephcslater/scipy,josephcslater/scipy,gef756/scipy,jjhelmus/scipy,andim/scipy,haudren/scipy,pnedunuri/scipy,gdooper/scipy,arokem/scipy,scipy/scipy,aeklant/scipy,maniteja123/scipy,sonnyhu/scipy,felipebetancur/scipy,behzadnouri/scipy,Kamp9/scipy,andim/scipy,andyfaff/scipy,tylerjereddy/scipy,Newman101/scipy,pbrod/scipy,ales-erjavec/scipy,gertingold/scipy,vanpact/scipy,njwilson23/scipy,zerothi/scipy,sriki18/scipy,jakevdp/scipy,pyramania/scipy,lhilt/scipy,rgommers/scipy,chatcannon/scipy,fernand/scipy,jor-/scipy,grlee77/scipy,larsmans/scipy,kleskjr/scipy,person142/scipy,nmayorov/scipy,Kamp9/scipy,grlee77/scipy,Stefan-Endres/scipy,WarrenWeckesser/scipy,niknow/scipy,matthewalbani/scipy,kalvdans/scipy,pschella/scipy,Kamp9/scipy,felipebetancur/scipy,surhudm/scipy,pschella/scipy,dominicelse/scipy,andyfaff/scipy,Eric89GXL/scipy,pizzathief/scipy,gertingold/scipy,behzadnouri/scipy,WarrenWeckesser/scipy,fernand/scipy,sonnyhu/scipy,felipebetancur/scipy,WarrenWeckesser/scipy,Stefan-Endres/scipy,Gillu13/scipy,kalvdans/scipy,person142/scipy,gfyoung/scipy,newemailjdm/scipy,scipy/scipy,bkendzior/scipy,gdooper/scipy,ales-erjavec/scipy,Shaswat27/scipy,Eric89GXL/scipy,sriki18/scipy,pbrod/scipy,vigna/scipy,endolith/scipy,gfyoung/scipy,vanpact/scipy,ilayn/scipy,minhlongdo/scipy,chatcannon/scipy,argriffing/scipy,jjhelmus/scipy,zaxliu/scipy,aarchiba/scipy,anielsen001/scipy,tylerjereddy/scipy,scipy/scipy,surhudm/scipy,felipebetancur/scipy,gfyoung/scipy,Stefan-Endres/scipy,larsmans/scipy,nonhermitian/scipy,chatcannon/scipy,fredrikw/scipy,zerothi/scipy,fredrikw/scipy,minhlongdo/scipy,mingwpy/scipy,arokem/scipy,e-q/scipy,andim/scipy,andim/scipy,matthewalbani/scipy,grlee77/scipy,zerothi/scipy,futurulus/scipy,mingwpy/scipy,njwilson23/scipy,nmayorov/scipy,vberaudi/scipy,behzadnouri/scipy,zerothi/scipy,zaxliu/scipy,Eric89GXL/scipy,rgommers/scipy,kleskjr/scipy,niknow/scipy,zaxliu/scipy,surhudm/scipy,kalvdans/scipy,andyfaff/scipy,person142/scipy,behzadnouri/scipy,aeklant/scipy,kleskjr/scipy,aarchiba/scipy,ilayn/scipy,larsmans/scipy,mikebenfield/scipy,futurulus/scipy,argriffing/scipy,anntzer/scipy,dominicelse/scipy,aeklant/scipy,vberaudi/scipy,jor-/scipy,mikebenfield/scipy,endolith/scipy,grlee77/scipy,tylerjereddy/scipy,haudren/scipy,mikebenfield/scipy,sonnyhu/scipy,gdooper/scipy,gertingold/scipy,Eric89GXL/scipy,gef756/scipy,pbrod/scipy,gef756/scipy,anntzer/scipy,vanpact/scipy,behzadnouri/scipy