urldecode2_safe not so safe

[jbanaszczyk]

OpenBK7231T_App/src/new_common.c

Line 60 in e109dce

break;

In this case dst will not be terminated by null

[btsimonh]

good spot, thankyou.

we should
if(curLen >= maxDstLen-1){
*dst = 0;
break;
}

hmm.. in fact it was terminated, but if maxlen represented actual buffer size, the zero would have been after the buffer end. pls review the PR. will close this, re-open if necessary.