Use proper filepaths

cmd/frontend/images.go

@@ -5,6 +5,7 @@ import (
 	"html/template"
 	"log"
 	"net/http"
+	"path/filepath"
 
 	b "streifling.com/jason/cpolis/cmd/backend"
 )
@@ -70,7 +71,7 @@ func UploadImage(c *b.Config, s map[string]*Session, fileKey, htmlFile, htmlTemp
 		data := new(struct{ Image string })
 		data.Image = filename
 
-		tmpl, err := template.ParseFiles(c.WebDir + "/templates/" + htmlFile)
+		tmpl, err := template.ParseFiles(filepath.Join(c.WebDir, "templates", htmlFile))
 		if err = template.Must(tmpl, err).ExecuteTemplate(w, htmlTemplate, data); err != nil {
 			log.Println(err)
 			http.Error(w, err.Error(), http.StatusInternalServerError)