grbl/grbl — pull request #368 by henols (2014-03-07 20:37:43+00:00)
Title: Probing command gets stuck in hold if several g38.2 are submitted

Ex.
G0 X0 Y0 Z0
G38.2 Z-10 F100
G10 L20 P0 Z0
G0 Z2
G38.2 Z-1 F50
G10 L20 P0 Z0
G0 Z2
G0 X0 Y0
G38.2 Z-1 F100
G0 Z2