Ignore error returned by json.Marshal to satisfy errchkjson linter.

Author: dsessler7

internal/collector/postgres_metrics.go

@@ -115,16 +115,11 @@ func EnablePostgresMetrics(ctx context.Context, inCluster *v1beta1.PostgresClust
 				inCluster.Spec.Instrumentation.Metrics.CustomQueries.Remove, fiveMinuteMetricsArr)
 
 			// Convert back to json data
-			fiveSecondMetricsClone, err = json.Marshal(fiveSecondMetricsArr)
-			if err != nil {
-				log.Error(err, "error compiling postgres metrics")
-			}
-
-			// Convert back to json data
-			fiveMinuteMetricsClone, err = json.Marshal(fiveMinuteMetricsArr)
-			if err != nil {
-				log.Error(err, "error compiling postgres metrics")
-			}
+			// The error return value can be ignored as the errchkjson linter
+			// deems the []queryMetrics to be a safe argument:
+			// https://github.com/breml/errchkjson
+			fiveSecondMetricsClone, _ = json.Marshal(fiveSecondMetricsArr)
+			fiveMinuteMetricsClone, _ = json.Marshal(fiveMinuteMetricsArr)
 		}
 
 		// Add Prometheus exporter