cs_themes.py: Fix regression from 1c21371, do not escape

newlines when writing icon cache file.

Author: mtwebster

files/usr/share/cinnamon/cinnamon-settings/modules/cs_themes.py

@@ -826,7 +826,7 @@ def refresh_chooser(self, chooser, path_suffix, themes, callback):
 
                 with open(icon_cache_path, 'w') as cache_file:
                     for theme_name, icon_path_val in icon_paths.items(): # Renamed icon_path to avoid conflict
-                        cache_file.write('%s:%s\\n' % (theme_name, icon_path_val))
+                        cache_file.write('%s:%s\n' % (theme_name, icon_path_val))
 
         else:
             if path_suffix == "cinnamon":