fix error-handling bug. add newline after stack traces.
fix error-handling bug.
add newline after stack traces.

R=rsc
DELTA=3  (2 added, 1 deleted, 0 changed)
OCL=18945
CL=18953

tav/go,tav/go,tav/go,tav/go,tav/go,tav/go,tav/go