Merge pull request #770 from kevinbackhouse/fix-build-SANE

Fix build error

Author: kevinbackhouse

SecurityExploits/SANE/epsonds_CVE-2020-12861/sane_backends_exploit.cpp

@@ -3,6 +3,9 @@
 #include <arpa/inet.h>
 #include <map>
 #include "utils.hpp"
+#include <stdio.h>
+#include <stdlib.h>
+#include <errno.h>
 
 // This number is the buffer size that we use in the "large_mmap" stage.
 // The exact value doesn't matter too much: it just needs to be more than