go vet fix and test error improvement

tor.go

@@ -293,8 +293,6 @@ func (c *TorContext) TestBridgeLines(bridgeLines []string) *TestResult {
 			return result
 		}
 	}
-
-	return result
 }
 
 // dispatcher reads new bridge test requests, triggers the test, and writes the

tor_test.go

@@ -73,11 +73,11 @@ func TestBridgeTest(t *testing.T) {
 
 	r, _ := result.Bridges[defaultBridge1]
 	if !r.Functional {
-		t.Errorf("Default bridge #1 deemed non-functional.")
+		t.Errorf("Default bridge #1 deemed non-functional: %v", r.Error)
 	}
 	r, _ = result.Bridges[defaultBridge2]
 	if !r.Functional {
-		t.Errorf("Default bridge #2 deemed non-functional.")
+		t.Errorf("Default bridge #2 deemed non-functional: %v", r.Error)
 	}
 	r, _ = result.Bridges[bogusBridge]
 	if r.Functional {