Use spaces in xdg-icon script

qubes-rpc/xdg-icon

@@ -7,15 +7,15 @@ themes = ['Humanity', 'Adwaita', 'gnome', 'oxygen']
 themes = themes + sorted([d for d in os.listdir("/usr/share/icons") if d not in themes and os.path.isdir("/usr/share/icons/" + d)])
 
 if len(sys.argv) < 3:
-	print("Usage:", sys.argv[0], "ICON SIZE")
-	sys.exit(1)
+    print("Usage:", sys.argv[0], "ICON SIZE")
+    sys.exit(1)
 
 for theme in themes:
-	icon = xdg.IconTheme.getIconPath(sys.argv[1], theme = theme, size = int(sys.argv[2]))
-	if icon is not None:
-		break
+    icon = xdg.IconTheme.getIconPath(sys.argv[1], theme = theme, size = int(sys.argv[2]))
+    if icon is not None:
+        break
 
 if icon is None:
-	sys.exit(1)
+    sys.exit(1)
 
 print(icon)