android: always run adb reverse when starting the packager

It tends to close, so always open the reverse tunnel.

android/scripts/run-packager.sh

@@ -8,13 +8,14 @@ THIS_DIR=$(cd -P "$(dirname "$(readlink "${BASH_SOURCE[0]}" || echo "${BASH_SOUR
 export RCT_METRO_PORT="${RCT_METRO_PORT:=8081}"
 echo "export RCT_METRO_PORT=${RCT_METRO_PORT}" > "${THIS_DIR}/../../node_modules/react-native/scripts/.packager.env"
 
+adb reverse tcp:8081 tcp:8081
+
 if nc -w 5 -z localhost ${RCT_METRO_PORT} ; then
   if ! curl -s "http://localhost:${RCT_METRO_PORT}/status" | grep -q "packager-status:running" ; then
     echo "Port ${RCT_METRO_PORT} already in use, packager is either not running or not running correctly"
     exit 2
   fi
 else
-    adb reverse tcp:8081 tcp:8081
     CMD="${THIS_DIR}/../../node_modules/react-native/scripts/launchPackager.command"
     if [[ `uname` == "Darwin"  ]]; then
         open -g "${CMD}" || echo "Can't start packager automatically"