fix windows build errors (MODAPP-212, FSBUILD-116, FSBUILD-117)

git-svn-id: http://svn.freeswitch.org/svn/freeswitch/trunk@11883 d0543943-73ff-0310-b7d9-9358b9ac24b2

src/mod/applications/mod_fax/mod_fax.c

@@ -403,8 +403,8 @@ void process_fax(switch_core_session_t *session, const char *data, application_m
 	switch_frame_t *read_frame = { 0 };
 	switch_frame_t write_frame = { 0 };
     switch_codec_implementation_t read_impl = {0};
-    switch_core_session_get_read_impl(session, &read_impl);
 	int16_t *buf = NULL;
+    switch_core_session_get_read_impl(session, &read_impl);
 
 	/* make sure we have a valid channel when starting the FAX application */
 	channel = switch_core_session_get_channel(session);