Check for nil before deferencing pointer in SG config
Check for nil before deferencing pointer in SG config

Signed-off-by: Nathan LeClaire <38947c4d2b13dfd9789405506441b98609e8975e@gmail.com>

troy0820/docker.github.io,jmelis/machine,phiroict/docker,troy0820/docker.github.io,jzwlqx/denverdino.github.io,JimGalasyn/docker.github.io,JimGalasyn/docker.github.io,zchee/machine,johnstep/docker.github.io,joeuo/docker.github.io,JimGalasyn/docker.github.io,docker-zh/docker.github.io,SvenDowideit/machine,anweiss/docker.github.io,BSWANG/denverdino.github.io,bdwill/docker.github.io,sanscontext/docker.github.io,tpires/machine,jzwlqx/denverdino.github.io,aduermael/docker.github.io,alexisbellido/docker.github.io,robvanmieghem/machine,ppadala/machine,docker/docker.github.io,tpires/machine,danix800/docker.github.io,LuisBosquez/docker.github.io,kunalkushwaha/machine,moxiegirl/machine,shubheksha/docker.github.io,faijaz/docker-machine,tyrken/machine,robertbreker/machine,troy0820/docker.github.io,joaofnfernandes/docker.github.io,otherjason/machine,londoncalling/machine,sebadiaz/machine,thaJeztah/docker.github.io,errordeveloper/machine,bdwill/docker.github.io,alexisbellido/docker.github.io,menglingwei/denverdino.github.io,kacole2/machine,Herbis/machine,shin-/docker.github.io,sebadiaz/machine,thaJeztah/machine,shin-/docker.github.io,voutilad/machine,jzwlqx/denverdino.github.io,jeffellin/machine,anweiss/docker.github.io,menglingwei/denverdino.github.io,StackPointCloud/machine,jsirois/machine,larsla/machine,londoncalling/docker.github.io,jsirois/machine,menglingwei/denverdino.github.io,anweiss/docker.github.io,dgageot/machine,BSWANG/denverdino.github.io,anweiss/docker.github.io,denverdino/docker.github.io,londoncalling/docker.github.io,phiroict/docker,ppadala/machine,BSWANG/denverdino.github.io,voutilad/machine,BSWANG/denverdino.github.io,jzwlqx/denverdino.github.io,johnstep/docker.github.io,exoscale/docker-machine,otherjason/machine,docker-zh/docker.github.io,denverdino/machine,aduermael/docker.github.io,sanscontext/docker.github.io,sebadiaz/machine,docker/machine,jmelis/machine,rillig/docker.github.io,zchee/machine,tyrken/machine,jsirois/machine,bdwill/docker.github.io,errordeveloper/machine,rillig/docker.github.io,shubheksha/docker.github.io,StackPointCloud/machine,dweomer/docker-machine,zchee/machine,londoncalling/docker.github.io,docker-zh/docker.github.io,skatsuta/machine,otherjason/machine,JimGalasyn/docker.github.io,xinxian0458/machine,shin-/docker.github.io,xinxian0458/machine,ppadala/machine,thaJeztah/machine,joeuo/docker.github.io,rillig/docker.github.io,gdevillele/docker.github.io,faijaz/docker-machine,joeuo/docker.github.io,moxiegirl/machine,joeuo/docker.github.io,xinxian0458/machine,johnstep/docker.github.io,ibuildthecloud/machine,miqui/machine,londoncalling/docker.github.io,shin-/docker.github.io,shubheksha/docker.github.io,LuisBosquez/docker.github.io,johnstep/docker.github.io,wzymaster/machine,jzwlqx/denverdino.github.io,tpires/machine,menglingwei/denverdino.github.io,jeanlaurent/machine,shin-/docker.github.io,jmelis/machine,errordeveloper/machine,anweiss/docker.github.io,thaJeztah/docker.github.io,kunalkushwaha/machine,skatsuta/machine,joaofnfernandes/docker.github.io,dgageot/machine,thaJeztah/machine,sanscontext/docker.github.io,LuisBosquez/docker.github.io,wzymaster/machine,jeanlaurent/machine,denverdino/machine,gdevillele/docker.github.io,docker/docker.github.io,jeanlaurent/machine,Herbis/machine,robertbreker/machine,aduermael/docker.github.io,miqui/machine,londoncalling/docker.github.io,bgokden/machine,sanscontext/docker.github.io,bgokden/machine,robvanmieghem/machine,robvanmieghem/machine,jeffellin/machine,LuisBosquez/docker.github.io,miqui/machine,exoscale/docker-machine,wzymaster/machine,menglingwei/denverdino.github.io,docker/docker.github.io,denverdino/denverdino.github.io,bdwill/docker.github.io,dweomer/docker-machine,menglingwei/machine,docker/docker.github.io,danix800/docker.github.io,joaofnfernandes/docker.github.io,faijaz/docker-machine,aduermael/docker.github.io,troy0820/docker.github.io,StackPointCloud/machine,rillig/docker.github.io,denverdino/machine,gdevillele/docker.github.io,menglingwei/machine,menglingwei/machine,kacole2/machine,alexisbellido/docker.github.io,johnstep/docker.github.io,gdevillele/docker.github.io,BSWANG/denverdino.github.io,denverdino/docker.github.io,robertbreker/machine,joaofnfernandes/docker.github.io,thaJeztah/docker.github.io,denverdino/denverdino.github.io,denverdino/docker.github.io,phiroict/docker,bgokden/machine,alexisbellido/docker.github.io,docker/machine,denverdino/denverdino.github.io,danix800/docker.github.io,phiroict/docker,denverdino/docker.github.io,joeuo/docker.github.io,SvenDowideit/machine,flavio/machine,moxiegirl/machine,LuisBosquez/docker.github.io,shubheksha/docker.github.io,gdevillele/docker.github.io,denverdino/denverdino.github.io,thaJeztah/docker.github.io,bdwill/docker.github.io,londoncalling/machine,kacole2/machine,docker/docker.github.io,tyrken/machine,joaofnfernandes/docker.github.io,flavio/machine,JimGalasyn/docker.github.io,alexisbellido/docker.github.io,skatsuta/machine,thaJeztah/docker.github.io,kunalkushwaha/machine,sanscontext/doc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