re-org: unexport dialectByName()

lib/goose/dbconf.go

@@ -63,7 +63,7 @@ func NewDBConf(p, env string) (*DBConf, error) {
 
 	// allow the configuration to override the Dialect for this driver
 	if dialect, err := f.Get(fmt.Sprintf("%s.dialect", env)); err == nil {
-		d.Dialect = DialectByName(dialect)
+		d.Dialect = dialectByName(dialect)
 	}
 
 	if !d.IsValid() {

lib/goose/dialect.go

@@ -13,7 +13,7 @@ type SqlDialect interface {
 }
 
 // drivers that we don't know about can ask for a dialect by name
-func DialectByName(d string) SqlDialect {
+func dialectByName(d string) SqlDialect {
 	switch d {
 	case "postgres":
 		return &PostgresDialect{}