References: bsc#969377 - xen does not build with GCC 6

--- xen-4.6.1-testing/xen/arch/x86/cpu/mcheck/non-fatal.c.orig	2016-03-04 15:59:08.000000000 -0700
+++ xen-4.6.1-testing/xen/arch/x86/cpu/mcheck/non-fatal.c	2016-03-04 16:00:25.000000000 -0700
@@ -94,8 +94,8 @@ static int __init init_nonfatal_mce_chec
 	if (mce_disabled || !mce_available(c))
 		return -ENODEV;
 
-    if ( __get_cpu_var(poll_bankmask) == NULL )
-        return -EINVAL;
+	if ( __get_cpu_var(poll_bankmask) == NULL )
+		return -EINVAL;
 
 	/*
 	 * Check for non-fatal errors every MCE_RATE s
--- xen-4.6.1-testing/extras/mini-os-remote/lib/sys.c.orig	2016-03-04 15:27:26.000000000 -0700
+++ xen-4.6.1-testing/extras/mini-os-remote/lib/sys.c	2016-03-04 15:30:32.000000000 -0700
@@ -634,6 +634,7 @@ int closedir(DIR *dir)
 
 /* We assume that only the main thread calls select(). */
 
+#if defined(LIBC_VERBOSE) || defined(LIBC_DEBUG)
 static const char file_types[] = {
     [FTYPE_NONE]	= 'N',
     [FTYPE_CONSOLE]	= 'C',
@@ -646,6 +647,7 @@ static const char file_types[] = {
     [FTYPE_KBD]		= 'K',
     [FTYPE_FB]		= 'G',
 };
+#endif
 #ifdef LIBC_DEBUG
 static void dump_set(int nfds, fd_set *readfds, fd_set *writefds, fd_set *exceptfds, struct timeval *timeout)
 {