ensure that cfg.LogTo is properly closed on disconnect if its underlying type is a file

diamond.go

@@ -20,7 +20,7 @@ const defaultKey = "default"
 type Config struct {
 	DryRun   bool       // when true, queries will not run on the underlying database
 	LogLevel slog.Level // controls the level of information logged; defaults to slog.LevelInfo if not set
-	LogTo    io.Writer // where to write log output to; defaults to os.Stdout
+	LogTo    io.Writer  // where to write log output to; defaults to os.Stdout
 }
 
 type Engine struct {
@@ -121,6 +121,9 @@ func (e *Engine) logSql(msg, sql string) {
 // Disconnect - closes and disposes of this Engine's connection pool.
 func (e *Engine) Disconnect() {
 	e.conn.Close()
+	if asFile, ok := e.cfg.LogTo.(*os.File); ok {
+		_ = asFile.Close()
+	}
 }
 
 // Open - creates a new connection according to `connString`