[yelp] Fix a use of an uninitialized variable

[David King <davidk src gnome org>]

commit f97cc50b112326af2eb1ee7e3c43fab5ae057ab6
Author: Tomas Popela <tpopela redhat com>
Date:   Mon Jul 23 10:57:33 2018 +0200

    Fix a use of an uninitialized variable
    
    yelp-3.28.1/libyelp/yelp-info-parser.c:1174: var_decl: Declaring variable "menu_node" without initializer.
    yelp-3.28.1/libyelp/yelp-info-parser.c:1310: uninit_use: Using uninitialized value "menu_node".
     1308|       else if (*(menuitems[i]) != '\0') {
     1309|         tmp = g_strconcat ("\n", first_non_space (menuitems[i]), NULL);
     1310|->       xmlNewTextChild (mholder ? mholder : menu_node,
     1311|                          NULL, BAD_CAST "para1",
     1312|                         BAD_CAST tmp);

 libyelp/yelp-info-parser.c | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)
---
diff --git a/libyelp/yelp-info-parser.c b/libyelp/yelp-info-parser.c
index 0c383bfe..ed16e373 100644
--- a/libyelp/yelp-info-parser.c
+++ b/libyelp/yelp-info-parser.c
@@ -1171,7 +1171,7 @@ yelp_info_parse_menu (GtkTreeStore *tree, xmlNodePtr *node,
   gchar **split;
   gchar **menuitems;
   gchar *tmp = NULL;
-  xmlNodePtr newnode, menu_node, mholder = NULL;
+  xmlNodePtr newnode, menu_node = NULL, mholder = NULL;
   int i=0;
 
   split = g_strsplit (page_content, "* Menu:", 2);