lib543.c: OOM handling fixes

tests/libtest/lib543.c

@@ -5,7 +5,7 @@
  *                            | (__| |_| |  _ <| |___
  *                             \___|\___/|_| \_\_____|
  *
- * Copyright (C) 1998 - 2011, Daniel Stenberg, <daniel@haxx.se>, et al.
+ * Copyright (C) 1998 - 2012, Daniel Stenberg, <daniel@haxx.se>, et al.
  *
  * This software is licensed as described in the file COPYING, which
  * you should have received as part of this distribution. The terms
@@ -45,9 +45,12 @@ int test(char *URL)
 
   s = curl_easy_escape(easy, (char*)a, asize);
 
-  printf("%s\n", s);
+  if(s)
+    printf("%s\n", s);
+
+  if(s)
+    curl_free(s);
 
-  curl_free(s);
   curl_easy_cleanup(easy);
 
   return 0;