Use a simple format string for JSON printing, thus not interpreting % as a conversion specifier

gistfile1.txt

--- a/src/mod/applications/mod_commands/mod_commands.c
+++ b/src/mod/applications/mod_commands/mod_commands.c
@@ -4809,7 +4809,7 @@ SWITCH_STANDARD_API(show_function)
                                        switch_log_printf(SWITCH_CHANNEL_LOG, SWITCH_LOG_CRIT, "Memory Error!\n");
                                        holder.stream->write_function(holder.stream, "-ERR Memory Error!\n");
                                } else {
-                                       holder.stream->write_function(holder.stream, json_text);
+                                       holder.stream->write_function(holder.stream, "%s", json_text);
                                }
                                cJSON_Delete(result);
                                switch_safe_free(json_text);