[Android] Browsers: Stop subdirectories parsing when stopped

[Geoffrey Métais]

vlc-android | branch: master | Geoffrey Métais <geoffrey.metais at gmail.com> | Tue Jul 30 10:22:31 2019 +0200| [a31ff3d9ea120f323c50fcf498b506bbe28d22f9] | committer: Geoffrey Métais

Browsers: Stop subdirectories parsing when stopped

When fragment is stopped, cancel subdirectories discovery

> https://code.videolan.org/videolan/vlc-android/commit/a31ff3d9ea120f323c50fcf498b506bbe28d22f9
---

 .../vlc/gui/browser/FileBrowserFragment.kt         |   4 +-
 .../vlc/gui/browser/StorageBrowserFragment.kt      |   3 +-
 .../org/videolan/vlc/providers/BrowserProvider.kt  | 115 ++++++++++++---------
 .../vlc/viewmodels/browser/BrowserModel.kt         |   2 +-
 4 files changed, 70 insertions(+), 54 deletions(-)

Diff:   https://code.videolan.org/videolan/vlc-android/commit/a31ff3d9ea120f323c50fcf498b506bbe28d22f9