Do not cache empty tiles.

With this update tiles which failed to load and have zero data are not
saved (cached).

Change-Id: I580db9096553d403d89c135bcf90ac5fb4c97fe8
Reviewed-by: Laszlo Agocs <laszlo.agocs@theqtcompany.com>

1 files changed, 3 insertions, 0 deletions

diff --git a/src/location/maps/qgeofiletilecache.cpp b/src/location/maps/qgeofiletilecache.cpp
index 4efe9696..688fdf32 100644
--- a/src/location/maps/qgeofiletilecache.cpp
+++ b/src/location/maps/qgeofiletilecache.cpp
@@ -307,6 +307,9 @@ void QGeoFileTileCache::insert(const QGeoTileSpec &spec,
                            const QString &format,
                            QGeoTiledMappingManagerEngine::CacheAreas areas)
 {
+    if (bytes.isEmpty())
+        return;
+
     if (areas & QGeoTiledMappingManagerEngine::DiskCache) {
         QString filename = tileSpecToFilename(spec, format, directory_);
         QFile file(filename);