FIXED: bug in kernel/sys/conf/m40.s dump code

[utzoo!decvax!ucbvax!dist2]

	If ``.dump'' is defined to be 0 (i.e. off) in m40.s and one
tries to take a dump anyway, the code was so arranged that one would
fall through to ``start:'' instead of idling.  To fix this, the ``br
.'' instruction at line 101 should be moved one line farther down:

	diff kernel/sys/conf/m40.s.old kernel/sys/conf/m40.s 
	101d100
	< 	br	.
	102a102
	> 	br	.


This is not a problem in mch.s as its dump code is not conditionally
compiled.  This fix should be applied to all tapes made before 9/29/81.

			Carl