fixed asan warning

programs/playTests.sh

@@ -39,9 +39,12 @@ echo frame concatenation test completed
 
 echo "**** flush write error test **** "
 
+echo "echo foo | $ZSTD > /dev/full"
 echo foo | $ZSTD > /dev/full && die "write error not detected!"
+echo "echo foo | $ZSTD | $ZSTD -d > /dev/full"
 echo foo | $ZSTD | $ZSTD -d > /dev/full && die "write error not detected!"
 
+
 echo "*** dictionary tests *** "
 
 ./datagen > tmpDict