Fixed infinite loop
@@ -573,7 +573,7 @@ public class Jval{
int exitCh = current;
read();
startCapture();
- while(current != exitCh){
+ while(current >= 0 && current != exitCh){
if(current == '\\') readEscape();
//else if(current < 0x20) throw expected("valid string character");
else read();
