Added missing string.h include.

graphics/path.c

diff --git a/graphics/path.c b/graphics/path.c
index bf6e8df..290ddcd 100644
--- a/graphics/path.c
+++ b/graphics/path.c
@@ -7,6 +7,7 @@
 #include <assert.h>
 #include <malloc.h>
 #include <math.h>
+#include <string.h>
 
 #include "winbase.h"
 #include "wingdi.h"

graphics/psdrv/init.c

diff --git a/graphics/psdrv/init.c b/graphics/psdrv/init.c
index 2348146..957709b 100644
--- a/graphics/psdrv/init.c
+++ b/graphics/psdrv/init.c
@@ -4,6 +4,7 @@
  *	Copyright 1998 Huw D M Davies
  *
  */
+#include <string.h>
 
 #include "gdi.h"
 #include "psdrv.h"