D5481: [Media Controller] Use double for length instead of int

[Kai Uwe Broulik]

broulik edited the summary of this revision.

REPOSITORY
  R120 Plasma Workspace

REVISION DETAIL
  https://phabricator.kde.org/D5481

To: broulik, #plasma
Cc: plasma-devel, spstarr, progwolff, lesliezhai, ali-mohamed, jensreuterberg, 
abetts, sebas, apol