libtt: Warning prevention

One missing stdlib include and one security warning about not
using varargs func correctly.

cde/lib/tt/mini_isam/isbtree.c

@@ -40,6 +40,7 @@
  *	B-tree operations: SEARCH
  *	
  */
+#include <stdlib.h>
 
 #include "isam_impl.h"
 

cde/lib/tt/mini_isam/iserror.c

@@ -114,7 +114,7 @@ _isam_warning(msg)
     char	*msg;
 {
     openlog("NetISAM", LOG_PID, LOG_USER);
-    syslog(LOG_ERR, msg);
+    syslog(LOG_ERR, "%s", msg);
 }
 
 /* Set user specified fatal_error handler */