* src/su.c: Do not sanitize the environment. This breaks

--preserve-environment. This sanitation was disabled on Debian
	since quite some time with no reported issues, and sanitize_env()
	documentation agrees that it should be useless as all modern
	Unixes will handle setuid executables properly. This Fixes
	Alioth#312287.

src/su.c

@@ -409,8 +409,6 @@ int main (int argc, char **argv)
 #endif
 #endif				/* !USE_PAM */
 
-	sanitize_env ();
-
 	(void) setlocale (LC_ALL, "");
 	(void) bindtextdomain (PACKAGE, LOCALEDIR);
 	(void) textdomain (PACKAGE);