Revert an errant part of a previous cleanup, to fix a memory corruption issue.

(closes issue #16368)
 Reported by: thirionjwf
 Patches:
       res_speech.c.patch uploaded by thirionjwf (license 955)

git-svn-id: https://origsvn.digium.com/svn/asterisk/trunk@247841 65c4cc65-6c06-0410-ace0-fbb531ad65f3

diff --git a/res/res_speech.c b/res/res_speech.c
index 5b8e1a4..3f5f960 100644 (file)
--- a/res/res_speech.c
+++ b/res/res_speech.c
@@ -313,8 +313,9 @@ int ast_speech_unregister(const char *engine_name)
                        /* We have our engine... removed it */
                        AST_RWLIST_REMOVE_CURRENT(list);
                        /* If this was the default engine, we need to pick a new one */
-                       if (!default_engine)
+                       if (engine == default_engine) {
                                default_engine = AST_RWLIST_FIRST(&engines);
+                       }
                        ast_verb(2, "Unregistered speech recognition engine '%s'\n", engine_name);
                        /* All went well */
                        res = 0;