Fixed a few broken includes.
diff --git a/dlls/ntdll/rtl.c b/dlls/ntdll/rtl.c
index 104e0e6..517faf7 100644
--- a/dlls/ntdll/rtl.c
+++ b/dlls/ntdll/rtl.c
@@ -14,6 +14,7 @@
#include <math.h>
#include "windef.h"
#include "winbase.h"
+#include "winuser.h"
#include "wine/winestring.h"
#include "file.h"
#include "stackframe.h"
diff --git a/if1632/builtin.c b/if1632/builtin.c
index a514170..a817cc8 100644
--- a/if1632/builtin.c
+++ b/if1632/builtin.c
@@ -9,6 +9,7 @@
#include <string.h>
#include "winbase.h"
#include "wine/winbase16.h"
+#include "wine/winestring.h"
#include "builtin32.h"
#include "global.h"
#include "heap.h"
diff --git a/misc/cpu.c b/misc/cpu.c
index dc40c82..2aebd16 100644
--- a/misc/cpu.c
+++ b/misc/cpu.c
@@ -9,6 +9,7 @@
#include <string.h>
#include "winbase.h"
#include "wine/winbase16.h"
+#include "wine/winestring.h"
#include "winreg.h"
#include "global.h"
#include "winnt.h"
diff --git a/win32/kernel32.c b/win32/kernel32.c
index 7f4b59a..3c44f39 100644
--- a/win32/kernel32.c
+++ b/win32/kernel32.c
@@ -8,6 +8,8 @@
* the function documentation for more details.
*/
+#include <string.h>
+
#include "windef.h"
#include "winbase.h"
#include "wine/winbase16.h"