Ensure empty Syncthing conflict does not trigger stconflict nag

dotfiles/config/bmo/nag.ini

@@ -7,7 +7,7 @@
     term-color = magenta
 
 [nag.def.stconflict]
-    command = find $HOME/st/config/dotfiles* -name "*conflict*" | grep -v st/config/dotfiles/weechat
+    command = find $HOME/st/config/dotfiles* -name "*conflict*" | grep -v st/config/dotfiles/weechat | grep . || true
     expiry = 3 hours
     notify-urgency = critical
     term-color = lred