Add missing includes of stdlib.h.

(cherry picked from commit 7b4d6de8)

ChangeLog

+2018-10-10  Niels Möller  <nisse@lysator.liu.se>
+
+	Backported from master branch.
+	* aes-set-encrypt-key.c: Add missing include of stdlib.h.
+	* des-compat.c: Likewise.
+
 2018-08-09  Niels Möller  <nisse@lysator.liu.se>
 
 	Backported from master branch.

aes-set-encrypt-key.c

@@ -37,6 +37,7 @@
 #endif
 
 #include <assert.h>
+#include <stdlib.h>
 
 #include "aes-internal.h"
 

des-compat.c

@@ -35,6 +35,7 @@
 # include "config.h"
 #endif
 
+#include <stdlib.h>
 #include <string.h>
 #include <assert.h>