exp/norm: fixed bug that creeped in with moving to the new regexp, which caused the last line of a test block to be ignored.
exp/norm: fixed bug that creeped in with moving to the new
regexp, which caused the last line of a test block to be ignored.

R=r, rsc
CC=golang-dev
http://codereview.appspot.com/5177052

gnanderson/go,dsriram/golang,pombredanne/go-deleteme,tv42/old-go,gnanderson/go,apparentlymart/golang,gnanderson/go,pombredanne/go-deleteme,apparentlymart/golang,dsriram/golang,apparentlymart/golang,pombredanne/go-deleteme,dsriram/golang,apparentlymart/golang,dsriram/golang,dsriram/golang,gnanderson/go,dsriram/golang,tv42/old-go,apparentlymart/golang,tv42/old-go,pombredanne/go-deleteme,pombredanne/go-deleteme,pombredanne/go-deleteme,tv42/old-go,gnanderson/go,apparentlymart/golang,gnanderson/go,apparentlymart/golang,gnanderson/go,dsriram/golang,tv42/old-go,pombredanne/go-deleteme,tv42/old-go,tv42/old-go