contrib: fix premature insetion of status message into JSON

Pass first 2 lines of JSON unmodified. It contains protocol version
and start of block of blocks of status messages.

diff --git a/contrib/measure-net-speed-i3status.bash b/contrib/measure-net-speed-i3status.bash
old mode 100755 (executable)
new mode 100644 (file)
index 9f9e5ce..4eec33b
--- a/contrib/measure-net-speed-i3status.bash
+++ b/contrib/measure-net-speed-i3status.bash
@@ -18,7 +18,7 @@
 #   status_command measure-net-speed-i3status.bash
 # }
 
-i3status | (read line && echo $line && while :
+i3status | (read line && echo $line && read line && echo $line && while :
 do
   read line
   dat=$(measure-net-speed.bash)