Fix bad operator
Fix bad operator

Spotted by Perl 5.20:

  Possible precedence issue with control flow operator at /usr/lib/perl5/site_perl/5.20.1/x86_64-linux-gnu-thread-multi/Nix/Utils.pm line 46.

wmertens/nix,acowley/nix,vizanto/nix,gridaphobe/nix,gridaphobe/nix,puffnfresh/nix,ehmry/nix,dtzWill/nix,bennofs/nix,shlevy/nix,ehmry/nix,gridaphobe/nix,dezgeg/nix,aucampia/nix,rycee/nix,shlevy/nix,rycee/nix,bennofs/nix,bennofs/nix,dtzWill/nix,gebner/nix,dezgeg/nix,bennofs/nix,NixOS/nix,dezgeg/nix,vcunat/nix,bjornfor/nix,gebner/nix,peti/nix,acowley/nix,vizanto/nix,layus/nix,ysangkok/nix,wmertens/nix,shlevy/nix,vizanto/nix,rowhit/nix,puffnfresh/nix,offlinehacker/nix,peti/nix,ysangkok/nix,rowhit/nix,peti/nix,ysangkok/nix,ttuegel/nix,dezgeg/nix,layus/nix,shlevy/nix,rycee/nix,tchajed/nix,vcunat/nix,garbas/nix,joelmo/nix,layus/nix,pikajude/nix,rowhit/nix,NixOS/nix,dtzWill/nix,acowley/nix,vizanto/nix,offlinehacker/nix,pikajude/nix,rycee/nix,garbas/nix,ehmry/nix,ehmry/nix,gebner/nix,ehmry/nix,zimbatm/nix,puffnfresh/nix,aucampia/nix,wmertens/nix,bjornfor/nix,garbas/nix,offlinehacker/nix,joelmo/nix,rycee/nix,zimbatm/nix,tchajed/nix,layus/nix,vcunat/nix,puffnfresh/nix,ttuegel/nix,rowhit/nix,ttuegel/nix,ttuegel/nix,aucampia/nix,zimbatm/nix,NixOS/nix,dtzWill/nix,shlevy/nix,NixOS/nix,peti/nix,ehmry/nix,peti/nix,garbas/nix,bjornfor/nix,joelmo/nix,dezgeg/nix,pikajude/nix,gridaphobe/nix,tchajed/nix,NixOS/nix,dtzWill/nix,aucampia/nix,wmertens/nix,garbas/nix,zimbatm/nix,vcunat/nix,tchajed/nix,layus/nix,offlinehacker/nix,joelmo/nix,acowley/nix,bjornfor/nix,gebner/nix