Fix format_quality in presets

CHANGELOG.md

@@ -3,6 +3,7 @@
 ## [Unreleased]
 ### Fix
 - Fix memory bloat in some cases.
+- Fix `format_quality` usage in presets.
 
 ## [3.7.0] - 2022-07-27
 ### Add

options/presets.go

@@ -57,10 +57,9 @@ func parsePreset(presetStr string) error {
 }
 
 func ValidatePresets() error {
-	var po ProcessingOptions
-
 	for name, opts := range presets {
-		if err := applyURLOptions(&po, opts); err != nil {
+		po := NewProcessingOptions()
+		if err := applyURLOptions(po, opts); err != nil {
 			return fmt.Errorf("Error in preset `%s`: %s", name, err)
 		}
 	}