dtimsstart: Resolve 3 compiler warnings.

cde/programs/dtimsstart/util.c

@@ -22,6 +22,7 @@
  */
 /* @(#)$XConsortium: util.c /main/6 1996/07/12 15:44:21 pascale $ */
 
+#include <time.h>
 #include <DtHelp/LocaleXlate.h>  /* for locale equivalence between platforms */
 #include "xims.h"
 #include <sys/stat.h>

cde/programs/dtimsstart/win.c

@@ -320,7 +320,7 @@ int	clear_cmd_property(win)			/* clear WM_COMMAND property */
     ret = XGetCommand(Dpy, win, &av, &ac);
     if (ret && ac > 0) {
 	XFreeStringList(av);
-	XSetCommand(Dpy, win, 0, NULL);
+	XSetCommand(Dpy, win, 0, 0);
 	XSync(Dpy, False);
 	clear_ok = True;
 	DPR2(("\tWM_COMMAND cleared on %#x\n", win));