dark magic: make "continue" statement work in pas2c-parsed for-loops. (would skip iteration and lead to infinite loops before)
cleanup speech bubble code a little. this fixes
issue #719
just in case. one more nil check
issue #871 in hedgewars: "Hedgehog dropping into water while still attached to a rope makes engine crash"
Due to doStepRopeWork's being completely skipped 75% of the ticks - including drowning/detachment-condition checks