Apply suggestions from code review

Co-authored-by: M. J. Fromberger <michael.j.fromberger@gmail.com>

internal/consensus/byzantine_test.go

@@ -88,8 +88,7 @@ func TestByzantinePrevoteEquivocation(t *testing.T) {
 			}
 
 			eventBus := eventbus.NewDefault(log.TestingLogger().With("module", "events"))
-			err = eventBus.Start(ctx)
-			require.NoError(t, err)
+			require.NoError(t, eventBus.Start(ctx))
 
 			// Make a full instance of the evidence pool
 			evidenceDB := dbm.NewMemDB()

internal/evidence/pool.go

@@ -252,7 +252,7 @@ func (evpool *Pool) State() sm.State {
 
 func (evpool *Pool) Start(state sm.State) error {
 	if evpool.isStarted {
-		return errors.New("pooli is already running")
+		return errors.New("pool is already running")
 	}
 
 	evpool.state = state