Possible fix/workaround for dubious pointer derefs in #810861.

--- subversion-1.7.4/subversion/libsvn_auth_kwallet/kwallet.cpp.kwallet

+++ subversion-1.7.4/subversion/libsvn_auth_kwallet/kwallet.cpp

@@ -175,6 +175,10 @@ kwallet_terminate(void *data)

                    "kwallet-initialized",

                    APR_HASH_KEY_STRING,

                    NULL);

+      apr_hash_set(parameters,

+                   "kwallet-wallet",

+                   APR_HASH_KEY_STRING,

+                   NULL);

     }

   return APR_SUCCESS;

 }