Fix adb/fastboot windows compilations.

Many of the windows files where not including stdlib.h even though they
are using malloc/free calls.

(cherry-pick of 4115139c57ac27f49dfde88f42b8cde0f6b42154.)

Change-Id: If6959df9909d9d9928e9f4a2a96018166361cf3c
diff --git a/sysdeps_win32.c b/sysdeps_win32.c
index b082c6d..e69ec2b 100644
--- a/sysdeps_win32.c
+++ b/sysdeps_win32.c
@@ -2,6 +2,7 @@
 #include <winsock2.h>
 #include <windows.h>
 #include <stdio.h>
+#include <stdlib.h>
 #include <errno.h>
 #define  TRACE_TAG  TRACE_SYSDEPS
 #include "adb.h"