Fix compile warning for duk_console.c
Fix compile warning for duk_console.c

Fix signed vs. unsigned warning in flags handling.

svaarala/duktape,svaarala/duktape,svaarala/duktape,svaarala/duktape,svaarala/duktape,svaarala/duktape,svaarala/duktape,svaarala/duktape,svaarala/duktape