Fix a bug in integrate_hyperexponential() and integrate_nonlinear_no_specials()
Fix a bug in integrate_hyperexponential() and integrate_nonlinear_no_specials()

These are from sympy/integrals/risch.py.  The bug was just left over
syntax from before proper multiple extension support.  I didn't add any
tests because I don't know of any exponential or nonlinear no special
examples that exit with a non-elementary integral from residue_reduce()
(I'm interested to find some, though).

atsao72/sympy,MridulS/sympy,Arafatk/sympy,AunShiLord/sympy,atsao72/sympy,hargup/sympy,jaimahajan1997/sympy,shikil/sympy,vipulroxx/sympy,lidavidm/sympy,kevalds51/sympy,MechCoder/sympy,AkademieOlympia/sympy,dqnykamp/sympy,Mitchkoens/sympy,jbbskinny/sympy,atsao72/sympy,Shaswat27/sympy,pbrady/sympy,cccfran/sympy,drufat/sympy,Shaswat27/sympy,abloomston/sympy,sunny94/temp,Davidjohnwilson/sympy,aktech/sympy,MechCoder/sympy,skidzo/sympy,beni55/sympy,toolforger/sympy,Sumith1896/sympy,oliverlee/sympy,debugger22/sympy,dqnykamp/sympy,drufat/sympy,hrashk/sympy,chaffra/sympy,debugger22/sympy,meghana1995/sympy,kaichogami/sympy,souravsingh/sympy,vipulroxx/sympy,Curious72/sympy,cswiercz/sympy,kumarkrishna/sympy,Arafatk/sympy,lindsayad/sympy,mcdaniel67/sympy,kaushik94/sympy,iamutkarshtiwari/sympy,souravsingh/sympy,lidavidm/sympy,hargup/sympy,yukoba/sympy,VaibhavAgarwalVA/sympy,Mitchkoens/sympy,saurabhjn76/sympy,kevalds51/sympy,AunShiLord/sympy,kaushik94/sympy,amitjamadagni/sympy,asm666/sympy,Designist/sympy,abhiii5459/sympy,souravsingh/sympy,emon10005/sympy,kevalds51/sympy,abloomston/sympy,rahuldan/sympy,farhaanbukhsh/sympy,bukzor/sympy,sahmed95/sympy,Designist/sympy,sahilshekhawat/sympy,shikil/sympy,maniteja123/sympy,skirpichev/omg,iamutkarshtiwari/sympy,garvitr/sympy,hrashk/sympy,skidzo/sympy,meghana1995/sympy,wanglongqi/sympy,pbrady/sympy,Sumith1896/sympy,jerli/sympy,lindsayad/sympy,Titan-C/sympy,kmacinnis/sympy,atreyv/sympy,wyom/sympy,Sumith1896/sympy,abhiii5459/sympy,lindsayad/sympy,pandeyadarsh/sympy,vipulroxx/sympy,shipci/sympy,Arafatk/sympy,Gadal/sympy,abhiii5459/sympy,ga7g08/sympy,liangjiaxing/sympy,asm666/sympy,emon10005/sympy,drufat/sympy,ChristinaZografou/sympy,ga7g08/sympy,kumarkrishna/sympy,maniteja123/sympy,cswiercz/sympy,farhaanbukhsh/sympy,MridulS/sympy,jbbskinny/sympy,skidzo/sympy,bukzor/sympy,kaichogami/sympy,MridulS/sympy,AunShiLord/sympy,Davidjohnwilson/sympy,AkademieOlympia/sympy,beni55/sympy,pbrady/sympy,Titan-C/sympy,garvitr/sympy,cswiercz/sympy,Vishluck/sympy,jaimahajan1997/sympy,moble/sympy,hrashk/sympy,Titan-C/sympy,abloomston/sympy,bukzor/sympy,sunny94/temp,sampadsaha5/sympy,wyom/sympy,moble/sympy,beni55/sympy,AkademieOlympia/sympy,emon10005/sympy,diofant/diofant,jamesblunt/sympy,sunny94/temp,MechCoder/sympy,yukoba/sympy,ahhda/sympy,sahilshekhawat/sympy,liangjiaxing/sympy,amitjamadagni/sympy,mcdaniel67/sympy,VaibhavAgarwalVA/sympy,Mitchkoens/sympy,grevutiu-gabriel/sympy,cccfran/sympy,grevutiu-gabriel/sympy,yashsharan/sympy,Gadal/sympy,aktech/sympy,shikil/sympy,dqnykamp/sympy,Designist/sympy,chaffra/sympy,shipci/sympy,yashsharan/sympy,mafiya69/sympy,sahmed95/sympy,iamutkarshtiwari/sympy,shipci/sympy,asm666/sympy,grevutiu-gabriel/sympy,maniteja123/sympy,rahuldan/sympy,yashsharan/sympy,kumarkrishna/sympy,atreyv/sympy,rahuldan/sympy,jaimahajan1997/sympy,Vishluck/sympy,Davidjohnwilson/sympy,postvakje/sympy,saurabhjn76/sympy,aktech/sympy,Curious72/sympy,wyom/sympy,oliverlee/sympy,pandeyadarsh/sympy,madan96/sympy,mafiya69/sympy,Vishluck/sympy,farhaanbukhsh/sympy,ga7g08/sympy,debugger22/sympy,kmacinnis/sympy,jbbskinny/sympy,yukoba/sympy,kaushik94/sympy,sampadsaha5/sympy,postvakje/sympy,oliverlee/sympy,chaffra/sympy,atreyv/sympy,liangjiaxing/sympy,ChristinaZografou/sympy,cccfran/sympy,Shaswat27/sympy,madan96/sympy,sahmed95/sympy,Gadal/sympy,mafiya69/sympy,Curious72/sympy,kmacinnis/sympy,ahhda/sympy,jerli/sympy,VaibhavAgarwalVA/sympy,pandeyadarsh/sympy,jamesblunt/sympy,madan96/sympy,moble/sympy,wanglongqi/sympy,toolforger/sympy,saurabhjn76/sympy,jerli/sympy,hargup/sympy,postvakje/sympy,kaichogami/sympy,ahhda/sympy,toolforger/sympy,sahilshekhawat/sympy,wanglongqi/sympy,ChristinaZografou/sympy,mcdaniel67/sympy,sampadsaha5/sympy,lidavidm/sympy,garvitr/sympy,jamesblunt/sympy,meghana1995/sympy