Fix linting issues

Author: sasatrifunovic

collector/pg_long_running_transactions.go

@@ -66,7 +66,7 @@ func (PGLongRunningTransactionsCollector) Update(ctx context.Context, instance *
 	if err != nil {
 		return err
 	}
-	defer rows.Close()
+	defer func() { _ = rows.Close() }()
 
 	for rows.Next() {
 		var transactions, ageInSeconds float64

collector/pg_replication_slot.go

@@ -84,7 +84,7 @@ func (PGReplicationSlotCollector) Update(ctx context.Context, instance *instance
 	if err != nil {
 		return err
 	}
-	defer rows.Close()
+	defer func() { _ = rows.Close() }()
 
 	for rows.Next() {
 		var slotName sql.NullString

collector/pg_stat_activity_autovacuum.go

@@ -61,7 +61,7 @@ func (PGStatActivityAutovacuumCollector) Update(ctx context.Context, instance *i
 	if err != nil {
 		return err
 	}
-	defer rows.Close()
+	defer func() { _ = rows.Close() }()
 
 	for rows.Next() {
 		var relname string

collector/pg_stat_database.go

@@ -250,7 +250,7 @@ func (c *PGStatDatabaseCollector) Update(ctx context.Context, instance *instance
 	if err != nil {
 		return err
 	}
-	defer rows.Close()
+	defer func() { _ = rows.Close() }()
 
 	for rows.Next() {
 		var datid, datname sql.NullString

collector/pg_stat_statements.go

@@ -126,7 +126,7 @@ func (PGStatStatementsCollector) Update(ctx context.Context, instance *instance,
 	if err != nil {
 		return err
 	}
-	defer rows.Close()
+	defer func() { _ = rows.Close() }()
 	for rows.Next() {
 		var user, datname, queryid sql.NullString
 		var callsTotal, rowsTotal sql.NullInt64

collector/pg_stat_user_tables.go

@@ -193,7 +193,7 @@ func (c *PGStatUserTablesCollector) Update(ctx context.Context, instance *instan
 	if err != nil {
 		return err
 	}
-	defer rows.Close()
+	defer func() { _ = rows.Close() }()
 
 	for rows.Next() {
 		var datname, schemaname, relname sql.NullString

collector/pg_stat_walreceiver.go

@@ -141,7 +141,7 @@ func (c *PGStatWalReceiverCollector) Update(ctx context.Context, instance *insta
 	if err != nil {
 		return err
 	}
-	defer rows.Close()
+	defer func() { _ = rows.Close() }()
 	for rows.Next() {
 		var upstreamHost, slotName, status sql.NullString
 		var receiveStartLsn, receiveStartTli, flushedLsn, receivedTli, latestEndLsn, upstreamNode sql.NullInt64

collector/pg_statio_user_indexes.go

@@ -67,7 +67,7 @@ func (c *PGStatioUserIndexesCollector) Update(ctx context.Context, instance *ins
 	if err != nil {
 		return err
 	}
-	defer rows.Close()
+	defer func() { _ = rows.Close() }()
 	for rows.Next() {
 		var schemaname, relname, indexrelname sql.NullString
 		var idxBlksRead, idxBlksHit sql.NullFloat64

collector/pg_statio_user_tables.go

@@ -108,7 +108,7 @@ func (PGStatIOUserTablesCollector) Update(ctx context.Context, instance *instanc
 	if err != nil {
 		return err
 	}
-	defer rows.Close()
+	defer func() { _ = rows.Close() }()
 
 	for rows.Next() {
 		var datname, schemaname, relname sql.NullString

collector/pg_xlog_location.go

@@ -69,7 +69,7 @@ func (c PGXlogLocationCollector) Update(ctx context.Context, instance *instance,
 	if err != nil {
 		return err
 	}
-	defer rows.Close()
+	defer func() { _ = rows.Close() }()
 
 	for rows.Next() {
 		var bytes float64