pjsip_cli: Fix memory leak in ast_sip_cli_print_sorcery_objectset.

Fixed memory leaks in ast_sip_cli_print_sorcery_objectset and
ast_variable_list_sort.  

(closes issue ASTERISK-23266)
Review: http://reviewboard.asterisk.org/r/3200/
........

Merged revisions 408520 from http://svn.asterisk.org/svn/asterisk/branches/12


git-svn-id: https://origsvn.digium.com/svn/asterisk/trunk@408521 65c4cc65-6c06-0410-ace0-fbb531ad65f3

main/config.c

@@ -596,19 +596,19 @@ inline struct ast_variable *variable_list_switch(struct ast_variable *l1, struct
 
 struct ast_variable *ast_variable_list_sort(struct ast_variable *start)
 {
-	struct ast_variable *p, *q, *top;
+	struct ast_variable *p, *q;
+	struct ast_variable top;
 	int changed = 1;
-	top = ast_calloc(1, sizeof(struct ast_variable));
+	memset(&top, 0, sizeof(top));
-	top->next = start;
+	top.next = start;
 	if (start != NULL && start->next != NULL) {
 		while (changed) {
 			changed = 0;
-			q = top;
+			q = ⊤
-			p = top->next;
+			p = top.next;
 			while (p->next != NULL) {
 				if (p->next != NULL && strcmp(p->name, p->next->name) > 0) {
 					q->next = variable_list_switch(p, p->next);
-
 					changed = 1;
 				}
 				q = p;
@@ -617,7 +617,7 @@ struct ast_variable *ast_variable_list_sort(struct ast_variable *start)
 			}
 		}
 	}
-	return top->next;
+	return top.next;
 }
 
 const char *ast_config_option(struct ast_config *cfg, const char *cat, const char *var)

res/res_pjsip/pjsip_cli.c

@@ -71,9 +71,8 @@ int ast_sip_cli_print_sorcery_objectset(void *obj, void *arg, int flags)
 		}
 	}
 
-	if (!(separator = alloca(max_name_width + max_value_width + 8))) {
+	separator = ast_alloca(max_name_width + max_value_width + 8);
-		return -1;
+
-	}
 	memset(separator, '=', max_name_width + max_value_width + 3);
 	separator[max_name_width + max_value_width + 3] = 0;
 
@@ -86,6 +85,8 @@ int ast_sip_cli_print_sorcery_objectset(void *obj, void *arg, int flags)
 		ast_str_append(&context->output_buffer, 0, " %-*s : %s\n", max_name_width, i->name, i->value);
 	}
 
+	ast_variables_destroy(objset);
+
 	return 0;
 }