Fixed warning

src/main/java/org/kde/kdeconnect/UserInterface/ShareToReceiver.java

@@ -204,7 +204,7 @@ public class ShareToReceiver extends ActionBarActivity {
                     String path = cursor.getString(column_index);
                     np.set("filename", Uri.parse(path).getLastPathSegment());
                     np.set("size", (int)new File(path).length());
-                } catch(Exception _) {
+                } catch(Exception unused) {
 
                     Log.e("ShareToReceiver", "Could not resolve media to a file, trying to get info as media");