Inline a one-liner function

No need to expose a symbol for this.

internal/reader/encoding/encoding.go

@@ -35,8 +35,3 @@ func CharsetReader(charsetLabel string, input io.Reader) (io.Reader, error) {
 	// Transform document to UTF-8 from the specified encoding in XML prolog.
 	return charset.NewReaderLabel(charsetLabel, r)
 }
-
-// CharsetReaderFromContentType is used when the encoding is not specified for the input document.
-func CharsetReaderFromContentType(contentType string, input io.Reader) (io.Reader, error) {
-	return charset.NewReader(input, contentType)
-}

internal/reader/icon/finder.go

@@ -15,11 +15,11 @@ import (
 	"miniflux.app/v2/internal/config"
 	"miniflux.app/v2/internal/crypto"
 	"miniflux.app/v2/internal/model"
-	"miniflux.app/v2/internal/reader/encoding"
 	"miniflux.app/v2/internal/reader/fetcher"
 	"miniflux.app/v2/internal/urllib"
 
 	"github.com/PuerkitoBio/goquery"
+	"golang.org/x/net/html/charset"
 )
 
 type IconFinder struct {
@@ -191,7 +191,7 @@ func findIconURLsFromHTMLDocument(body io.Reader, contentType string) ([]string,
 		"link[rel='apple-touch-icon-precomposed.png']",
 	}
 
-	htmlDocumentReader, err := encoding.CharsetReaderFromContentType(contentType, body)
+	htmlDocumentReader, err := charset.NewReader(body, contentType)
 	if err != nil {
 		return nil, fmt.Errorf("icon: unable to create charset reader: %w", err)
 	}

internal/reader/scraper/scraper.go

@@ -10,12 +10,12 @@ import (
 	"strings"
 
 	"miniflux.app/v2/internal/config"
-	"miniflux.app/v2/internal/reader/encoding"
 	"miniflux.app/v2/internal/reader/fetcher"
 	"miniflux.app/v2/internal/reader/readability"
 	"miniflux.app/v2/internal/urllib"
 
 	"github.com/PuerkitoBio/goquery"
+	"golang.org/x/net/html/charset"
 )
 
 func ScrapeWebsite(requestBuilder *fetcher.RequestBuilder, websiteURL, rules string) (string, error) {
@@ -42,9 +42,9 @@ func ScrapeWebsite(requestBuilder *fetcher.RequestBuilder, websiteURL, rules str
 	var content string
 	var err error
 
-	htmlDocumentReader, err := encoding.CharsetReaderFromContentType(
-		responseHandler.ContentType(),
+	htmlDocumentReader, err := charset.NewReader(
 		responseHandler.Body(config.Opts.HTTPClientMaxBodySize()),
+		responseHandler.ContentType(),
 	)
 	if err != nil {
 		return "", fmt.Errorf("scraper: unable to read HTML document: %v", err)

internal/reader/subscription/finder.go

@@ -14,12 +14,12 @@ import (
 	"miniflux.app/v2/internal/integration/rssbridge"
 	"miniflux.app/v2/internal/locale"
 	"miniflux.app/v2/internal/model"
-	"miniflux.app/v2/internal/reader/encoding"
 	"miniflux.app/v2/internal/reader/fetcher"
 	"miniflux.app/v2/internal/reader/parser"
 	"miniflux.app/v2/internal/urllib"
 
 	"github.com/PuerkitoBio/goquery"
+	"golang.org/x/net/html/charset"
 )
 
 var (
@@ -150,7 +150,7 @@ func (f *SubscriptionFinder) FindSubscriptionsFromWebPage(websiteURL, contentTyp
 		"link[type='application/feed+json']": parser.FormatJSON,
 	}
 
-	htmlDocumentReader, err := encoding.CharsetReaderFromContentType(contentType, body)
+	htmlDocumentReader, err := charset.NewReader(body, contentType)
 	if err != nil {
 		return nil, locale.NewLocalizedErrorWrapper(err, "error.unable_to_parse_html_document", err)
 	}