plugin/geoip: cleanup code (#5009)

remove unnecessary float64 convert and clean code
Signed-off-by: xuweiwei <xuweiwei_yewu@cmss.chinamobile.com>

plugin/geoip/city.go

@@ -39,11 +39,11 @@ func (g GeoIP) setCityMetadata(ctx context.Context, data *geoip2.City) {
 		return continentCode
 	})
 
-	latitude := strconv.FormatFloat(float64(data.Location.Latitude), 'f', -1, 64)
+	latitude := strconv.FormatFloat(data.Location.Latitude, 'f', -1, 64)
 	metadata.SetValueFunc(ctx, pluginName+"/latitude", func() string {
 		return latitude
 	})
-	longitude := strconv.FormatFloat(float64(data.Location.Longitude), 'f', -1, 64)
+	longitude := strconv.FormatFloat(data.Location.Longitude, 'f', -1, 64)
 	metadata.SetValueFunc(ctx, pluginName+"/longitude", func() string {
 		return longitude
 	})

plugin/geoip/geoip.go

@@ -58,7 +58,7 @@ func newGeoIP(dbPath string) (*GeoIP, error) {
 				return nil, fmt.Errorf("unexpected failure looking up database %q schema %q: %v", filepath.Base(dbPath), schema.name, err)
 			}
 		} else {
-			db.provides = db.provides | schema.provides
+			db.provides |= schema.provides
 		}
 	}