[PATCH openbmc-build-scripts] initialise PROXY variable to avoid instance where no PROXY env exists and set -e catches ubound variable

[OpenBMC Patches]

From: Chris Smart <distroguy at gmail.com>

---
 build-setup.sh | 1 +
 1 file changed, 1 insertion(+)

diff --git a/build-setup.sh b/build-setup.sh
index d0a6fc2..91778f9 100755
--- a/build-setup.sh
+++ b/build-setup.sh
@@ -15,6 +15,7 @@ target=${target:-qemu}
 distro=${distro:-ubuntu}
 WORKSPACE=${WORKSPACE:-${HOME}/${RANDOM}${RANDOM}}
 http_proxy=${http_proxy:-}
+PROXY=""
 
 # Timestamp for job
 echo "Build started, $(date)"
-- 
2.7.1