make sure ReadState returns an error
make sure ReadState returns an error

ReadState would hide any errors, assuming that it was an empty state.
This can mask errors on Windows, where the OS enforces read locks on the
state file.

yanndegat/terraform,fatmcgav/terraform,mattray/terraform,luis-silva/terraform,nlamirault/terraform,pryorda/terraform,pryorda/terraform,iljaskevic/terraform,rnaveiras/terraform,ewbankkit/terraform,drebes/terraform,donaldguy/terraform,luis-silva/terraform,nlamirault/terraform,yanndegat/terraform,asedge/terraform,asedge/terraform,hartzell/terraform,VladRassokhin/terraform,pdecat/terraform,ewbankkit/terraform,yanndegat/terraform,hashicorp/terraform,gechr/terraform,fatmcgav/terraform,luis-silva/terraform,brandontosch/terraform,kl4w/terraform,justnom/terraform,youhong316/terraform,justnom/terraform,hashicorp/terraform,brandontosch/terraform,VladRassokhin/terraform,youhong316/terraform,tpounds/terraform,apparentlymart/terraform,ewbankkit/terraform,apparentlymart/terraform,apparentlymart/terraform,justnom/terraform,drebes/terraform,mattray/terraform,justnom/terraform,youhong316/terraform,fatmcgav/terraform,svanharmelen/terraform,tpounds/terraform,pdecat/terraform,hartzell/terraform,asedge/terraform,pradeepbhadani/terraform,drebes/terraform,kl4w/terraform,svanharmelen/terraform,youhong316/terraform,donaldguy/terraform,pryorda/terraform,VladRassokhin/terraform,mattray/terraform,tpounds/terraform,hartzell/terraform,svanharmelen/terraform,brandontosch/terraform,heimweh/terraform,apparentlymart/terraform,hashicorp/terraform,rnaveiras/terraform,iljaskevic/terraform,drebes/terraform,pdecat/terraform,brandontosch/terraform,tpounds/terraform,gechr/terraform,donaldguy/terraform,VladRassokhin/terraform,hartzell/terraform,yanndegat/terraform,heimweh/terraform,donaldguy/terraform,iljaskevic/terraform,tommynsong/terraform,brandontosch/terraform,pdecat/terraform,tommynsong/terraform,iljaskevic/terraform,kl4w/terraform,tommynsong/terraform,heimweh/terraform,rnaveiras/terraform,heimweh/terraform,pradeepbhadani/terraform,luis-silva/terraform,asedge/terraform,apparentlymart/terraform,mattray/terraform,kl4w/terraform,gechr/terraform,pradeepbhadani/terraform,nlamirault/terraform,heimweh/terraform,ewbankkit/terraform,svanharmelen/terraform,fatmcgav/terraform