[rygel] media-export: Check nice return value

[Jens Georg <jensgeorg src gnome org>]

commit 53fdd7ea012b80399b452a9923b06fbea03cca17
Author: Jens Georg <mail jensge org>
Date:   Mon Apr 17 09:31:33 2017 +0200

    media-export: Check nice return value
    
    Signed-off-by: Jens Georg <mail jensge org>

 .../media-export/rygel-media-export-extract.vala   |    4 +++-
 1 files changed, 3 insertions(+), 1 deletions(-)
---
diff --git a/src/plugins/media-export/rygel-media-export-extract.vala 
b/src/plugins/media-export/rygel-media-export-extract.vala
index 3bcea36..a121131 100644
--- a/src/plugins/media-export/rygel-media-export-extract.vala
+++ b/src/plugins/media-export/rygel-media-export-extract.vala
@@ -166,7 +166,9 @@ int main (string[] args) {
         return Posix.EXIT_FAILURE;
     }
 
-    Posix.nice (19);
+    if (Posix.nice (19) < 0) {
+        debug ("Failed to reduce nice level of thumbnailer, continuing anyway");
+    }
 
     var registry = Gst.Registry.@get ();
     var features = registry.feature_filter (vaapi_filter, false);