build failure in su in current cvs

in case no one has noticed, the latest merge of 437_su_-c_option Debian patch 
causes two errors ... the shellstr variable is declared twice:
-	char *shellstr = 0;
+	char *shellstr = 0, *shellstr = 0;
and the command string variable isnt declared anywhere ... fix is probably to 
change the second shellstr to command:
-	char *shellstr = 0, *shellstr = 0;
+	char *shellstr = 0, *command = 0;
-mike