Fix potential access of freed data (only if we couldn't create the

second of two registry keys, so pretty unlikely).

[originally from svn r5021]

windows/winstore.c

@@ -82,13 +82,14 @@ void *open_settings_w(const char *sessionname, char **errmsg)
 	return NULL;
     }
     ret = RegCreateKey(subkey1, p, &sesskey);
-    sfree(p);
     RegCloseKey(subkey1);
     if (ret != ERROR_SUCCESS) {
         *errmsg = dupprintf("Unable to create registry key\n"
                             "HKEY_CURRENT_USER\\%s\\%s", puttystr, p);
+	sfree(p);
 	return NULL;
     }
+    sfree(p);
     return (void *) sesskey;
 }