use strchr instead of index as recommended by the linux man pages for portability.

git-svn-id: http://svn.freeswitch.org/svn/freeswitch/trunk@3994 d0543943-73ff-0310-b7d9-9358b9ac24b2

src/mod/xml_int/mod_xml_curl/mod_xml_curl.c

@@ -77,7 +77,7 @@ static switch_xml_t xml_url_fetch(char *section,
                                 tag_name ? tag_name : "",
                                 key_name ? key_name : "",
                                 key_value ? key_value : "",
-                                params ? index(params,'=') ? "&" : "&params=" : "", params ? params : ""))) {
+                                params ? strchr(params,'=') ? "&" : "&params=" : "", params ? params : ""))) {
 
         switch_log_printf(SWITCH_CHANNEL_LOG, SWITCH_LOG_CRIT, "Memory Error!\n");
         return NULL;