fritz_tffs_read: fix parsing of size argument

The parameter specification missed that -s takes an argument.

Signed-off-by: Valentin Spreckels <[email protected]>

package/utils/fritz-tools/src/fritz_tffs_read.c

@@ -259,7 +259,7 @@ static void parse_options(int argc, char *argv[])
 	{
 		int c;
 
-		c = getopt(argc, argv, "abhi:ln:s");
+		c = getopt(argc, argv, "abhi:ln:s:");
 		if (c == -1)
 			break;