kern: Remove trailing whitespaces

Signed-off-by: Elyes Haouas <ehaouas@noos.fr>
Reviewed-by: Daniel Kiper <daniel.kiper@oracle.com>

grub-core/kern/ieee1275/openfw.c

@@ -404,7 +404,7 @@ grub_ieee1275_parse_args (const char *path, enum grub_ieee1275_parse_type ptype)
 	if (comma)
 	  {
 	    char *filepath = comma + 1;
-	    
+
 	    /* Make sure filepath has leading backslash.  */
 	    if (filepath[0] != '\\')
 	      ret = grub_xasprintf ("\\%s", filepath);