Include <sys/types.h> to define size_t.

git-svn-id: svn+ssh://svn.openpam.org/svn/openpam/trunk@160 185d5e19-27fe-0310-9dcf-9bff6b9f3609

lib/pam_prompt.c

@@ -31,9 +31,11 @@
  * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
  * SUCH DAMAGE.
  *
- * $P4: //depot/projects/openpam/lib/pam_prompt.c#7 $
+ * $P4: //depot/projects/openpam/lib/pam_prompt.c#8 $
  */
 
+#include <sys/types.h>
+
 #include <stdarg.h>
 
 #include <security/pam_appl.h>