In exec_user_method() report ERROR LOG to console in cases exceptions occurs,
like if any of class/method/userMethod->arg is null or for any reason which
sets status to SWITCH_STATUS_FALSE because that prevents loading mod_java and
users don't have clue why it is failing to load.
With this patch error logs can tell why method failed to execute.
FS not able to load mod_java because in load_config switch_status_t status
is not initialised and in some conditions status is not gets set ever
resulting returning garbage value, resulting failuar to load mod_java.so.
With this patch status is set to SWITCH_STATUS_SUCCESS so in case everything
is loaded it can load mod_java else status is set to SWITCH_STATUS_FALSE(which
is already covered).
