Fix formatting of back-to-back not shown icons.

Otherwise looks like this:

Icon (48 x 48):
(not shown)     Icon (64 x 64):
(not shown)     Icon (128 x 128):
(not shown)

1 files changed, 1 insertions, 1 deletions

diff --git a/xprop.c b/xprop.c
index f13660f..15c296d 100644
--- a/xprop.c
+++ b/xprop.c
@@ -813,7 +813,7 @@ Format_Icons (const unsigned long *icon, int len)
 
 	if ((display_width + 8) > term_width || height > 144)
 	{
-	    tail += sprintf (tail, "\t(not shown)");
+	    tail += sprintf (tail, "\t(not shown)\n");
 	    icon += width * height;
 	    continue;
 	}