Removed "implicit declaration" warnings.

diff --git a/msdos/int09.c b/msdos/int09.c
index 26a77a1..19f1640 100644
--- a/msdos/int09.c
+++ b/msdos/int09.c
@@ -3,6 +3,7 @@
  */
 
 #include <stdlib.h>
+#include <string.h>
 #include "winuser.h"
 #include "miscemu.h"
 #include "input.h"
diff --git a/msdos/ioports.c b/msdos/ioports.c
index beaea7b..49a9f10 100644
--- a/msdos/ioports.c
+++ b/msdos/ioports.c
@@ -20,6 +20,7 @@
 #include "vga.h"
 #include "dosexe.h"
 #include "options.h"
+#include "miscemu.h"
 #include "debug.h"
 #include "miscemu.h"