update

git-svn-id: http://svn.freeswitch.org/svn/freeswitch/trunk@7869 d0543943-73ff-0310-b7d9-9358b9ac24b2

diff --git a/src/switch_channel.c b/src/switch_channel.c
index 98e5200ff6a3a4a1df98dd2284b60a519b802198..caba6823fb2acee7fe4debb9380a9c25ec9d37a7 100644 (file)
--- a/src/switch_channel.c
+++ b/src/switch_channel.c
@@ -1561,6 +1561,10 @@ SWITCH_DECLARE(char *) switch_channel_expand_variables(switch_channel_t *channel
        char *func_val = NULL;
        int nv = 0;
 
+       if (switch_strlen_zero(in)) {
+               return (char *)in;
+       }
+
        q = in;
        while(q && *q) {
                if (!(p = strchr(q, '$'))) {