auth: remove index out of range in role grant
Fixes https://github.com/coreos/etcd/issues/5077release-3.0
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ac95cc32ef
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a016220648
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@ -279,7 +279,7 @@ func (as *authStore) RoleGrant(r *pb.AuthRoleGrantRequest) (*pb.AuthRoleGrantRes
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return bytes.Compare(role.KeyPermission[i].Key, []byte(r.Perm.Key)) >= 0
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})
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if bytes.Equal(role.KeyPermission[idx].Key, r.Perm.Key) {
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if idx < len(role.KeyPermission) && bytes.Equal(role.KeyPermission[idx].Key, r.Perm.Key) {
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// update existing permission
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role.KeyPermission[idx].PermType = r.Perm.PermType
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} else {
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