Be sure to not consider prefix on variable updates (bug #5444)

git-svn-id: https://origsvn.digium.com/svn/asterisk/trunk@6818 65c4cc65-6c06-0410-ace0-fbb531ad65f3

diff --git a/pbx.c b/pbx.c
index d8747d5..da7d5be 100755 (executable)
--- a/pbx.c
+++ b/pbx.c
@@ -5885,15 +5885,22 @@ void pbx_builtin_setvar_helper(struct ast_channel *chan, const char *name, const
 {
        struct ast_var_t *newvariable;
        struct varshead *headp;
-
+       const char *nametail = name;
 
        if (name[strlen(name)-1] == ')')
                return ast_func_write(chan, name, value);
 
        headp = (chan) ? &chan->varshead : &globals;
 
+       /* For comparison purposes, we have to strip leading underscores */
+       if (*nametail == '_') {
+               nametail++;
+               if (*nametail == '_') 
+                       nametail++;
+       }
+
        AST_LIST_TRAVERSE (headp, newvariable, entries) {
-               if (strcasecmp(ast_var_name(newvariable), name) == 0) {
+               if (strcasecmp(ast_var_name(newvariable), nametail) == 0) {
                        /* there is already such a variable, delete it */
                        AST_LIST_REMOVE(headp, newvariable, entries);
                        ast_var_delete(newvariable);