[tls] Add missing #include <stdlib.h>

Signed-off-by: Michael Brown <mcb30@ipxe.org>

diff --git a/src/include/ipxe/x509.h b/src/include/ipxe/x509.h
index 37c5a4ee554104d9a0cd870687acd07df87ca2d7..2ea21aa9cffd9fb36d22484499b0712f5b6175c3 100644 (file)
--- a/src/include/ipxe/x509.h
+++ b/src/include/ipxe/x509.h
@@ -10,6 +10,7 @@
 FILE_LICENCE ( GPL2_OR_LATER );
 
 #include <stdint.h>
+#include <stdlib.h>
 
 struct asn1_cursor;