pptp-linux: add musl build fix patch

Fixes:
http://autobuild.buildroot.net/results/56d/56dd530d53489220d0080480310b8dc150cf1b2e/

Signed-off-by: Gustavo Zacarias <gustavo@zacarias.com.ar>
Tested-by: Bernd Kuhls <bernd.kuhls@t-online.de>
Signed-off-by: Peter Korsgaard <peter@korsgaard.com>

package/pptp-linux/0003-pqueue.h-include-sys-types.h.patch

@@ -0,0 +1,30 @@
+From 060ad28b9ca5e99d7c6e8010132da58a3a8a0585 Mon Sep 17 00:00:00 2001
+From: Gustavo Zacarias <gustavo@zacarias.com.ar>
+Date: Fri, 22 Jan 2016 10:19:18 -0300
+Subject: [PATCH] pqueue.h: include sys/types.h
+
+We're using u_int32_t here, this breaks on musl libc builds otherwise.
+
+Signed-off-by: Gustavo Zacarias <gustavo@zacarias.com.ar>
+---
+Patch status: sent upstream to the devel mailing list
+(moderated, no archive link yet)
+
+ pqueue.h | 1 +
+ 1 file changed, 1 insertion(+)
+
+diff --git a/pqueue.h b/pqueue.h
+index a56590f..8c60c62 100644
+--- a/pqueue.h
++++ b/pqueue.h
+@@ -3,6 +3,7 @@
+ 
+ #include <time.h>
+ #include <sys/time.h>
++#include <sys/types.h>
+ 
+ /* wait this many seconds for missing packets before forgetting about them */
+ #define DEFAULT_PACKET_TIMEOUT 0.3
+-- 
+2.4.10
+