Fix: capacity should be returned back when put failed

pkg/webdav/if.go

@@ -131,7 +131,7 @@ const (
 )
 
 func lex(s string) (tokenType rune, tokenStr string, remaining string) {
-	// The net/textproto Reader that parses the HTTP header will collapse
+	// The net/textproto Data that parses the HTTP header will collapse
 	// Linear White Space that spans multiple "\r\n" lines to a single " ",
 	// so we don't need to look for '\r' or '\n'.
 	for len(s) > 0 && (s[0] == '\t' || s[0] == ' ') {

pkg/webdav/webdav.go

@@ -346,6 +346,7 @@ func (h *Handler) handlePut(w http.ResponseWriter, r *http.Request, fs *filesyst
 		fs.Use("AfterUpload", filesystem.GenericAfterUpload)
 		fs.Use("AfterValidateFailed", filesystem.HookDeleteTempFile)
 		fs.Use("AfterValidateFailed", filesystem.HookGiveBackCapacity)
+		fs.Use("AfterUploadFailed", filesystem.HookGiveBackCapacity)
 	}
 
 	// 执行上传