interim commit while dropping dependence on printf in awk

qse/lib/awk/tree.c

@@ -285,6 +285,7 @@ static int print_expr (qse_awk_t* awk, qse_awk_nde_t* nde)
 					buf, QSE_COUNTOF(buf),
 					((qse_awk_nde_int_t*)nde)->val,
 					10, 
+					-1,
 					QSE_T('\0'),
 					QSE_NULL
 				);