Compilation error

```
dcarol@dcarol ~/w/g/kilo> make
cc -o kilo kilo.c -Wall -W -pedantic -std=c99
In file included from /usr/include/termios.h:25:0,
from kilo.c:40:
/usr/include/features.h:148:3: warning: #warning "_BSD_SOURCE and _SVID_SOURCE are deprecated, use _DEFAULT_SOURCE" [-Wcpp]
# warning "_BSD_SOURCE and _SVID_SOURCE are deprecated, use _DEFAULT_SOURCE"
^~~~~~~
kilo.c: In function ‘editorRefreshScreen’:
kilo.c:953:19: warning: implicit declaration of function ‘time’ [-Wimplicit-function-declaration]
if (msglen && time(NULL)-E.statusmsg_time < 5)
^~~~
```