(closes issue #13041)

Reported by: eliel

OK, now the context registrar slot is strdup'd. It is freed
on destruction. I don't see the need to do this with all
the structs' registrar fields, but if some wild case proves
they should also be handled this way, then we can 
put in the extra work at that time.




git-svn-id: https://origsvn.digium.com/svn/asterisk/trunk@130297 65c4cc65-6c06-0410-ace0-fbb531ad65f3

main/pbx.c

@@ -213,7 +213,7 @@ struct ast_context {
 	struct ast_context *next;		/*!< Link them together */
 	struct ast_include *includes;		/*!< Include other contexts */
 	struct ast_ignorepat *ignorepats;	/*!< Patterns for which to continue playing dialtone */
-	const char *registrar;			/*!< Registrar */
+	char *registrar;			/*!< Registrar -- make sure you malloc this, as the registrar may have to survive module unloads */
 	int refcount;                   /*!< each module that would have created this context should inc/dec this as appropriate */
 	AST_LIST_HEAD_NOLOCK(, ast_sw) alts;	/*!< Alternative switches */
 	ast_mutex_t macrolock;			/*!< A lock to implement "exclusive" macros - held whilst a call is executing in the macro */
@@ -5617,7 +5617,7 @@ struct ast_context *ast_context_find_or_create(struct ast_context **extcontexts,
 		strcpy(tmp->name, name);
 		tmp->root = NULL;
 		tmp->root_table = NULL;
-		tmp->registrar = registrar;
+		tmp->registrar = ast_strdup(registrar);
 		tmp->includes = NULL;
 		tmp->ignorepats = NULL;
 		tmp->refcount = 1;
@@ -7305,6 +7305,9 @@ static void __ast_internal_context_destroy( struct ast_context *con)
 		ipi = ipi->next;
 		ast_free(ipl);
 	}
+	if (tmp->registrar)
+		ast_free(tmp->registrar);
+	
 	/* destroy the hash tabs */
 	if (tmp->root_table) {
 		ast_hashtab_destroy(tmp->root_table, 0);