Build errors with latest xen-unstable from staging

[Kamala Narasimhan <kamala.narasimhan@gmail.com>]

FYI - Pulled the latest xen-unstable from staging to sync some patches and got
these trivial errors while compiling -

xl_cmdimpl.c: In function ‘print_domain_vcpuinfo’:
xl_cmdimpl.c:3351: warning: ‘firstset’ may be used uninitialized in this function
xl_cmdimpl.c:3351: note: ‘firstset’ was declared here
xl_cmdimpl.c:3350: warning: ‘bitmask’ may be used uninitialized in this function
xl_cmdimpl.c:3350: note: ‘bitmask’ was declared here
xl_cmdimpl.c:3350: warning: ‘pmap’ may be used uninitialized in this function
xl_cmdimpl.c:3350: note: ‘pmap’ was declared here

GCC version - 4.2.4.  Initializing the three variables it complained about fixed
the issue.  If this trivial change should require a signed off line, here it is
- Signed-off-by: Kamala Narasimhan <kamala.narasimhan@citrix.com>

diff -r 7ada6faef565 tools/libxl/xl_cmdimpl.c
--- a/tools/libxl/xl_cmdimpl.c	Sun Feb 06 17:26:31 2011 +0000
+++ b/tools/libxl/xl_cmdimpl.c	Sun Feb 06 13:53:50 2011 -0500
@@ -3347,8 +3347,8 @@ static void print_bitmap(uint8_t *map, i
 static void print_bitmap(uint8_t *map, int maplen, FILE *stream)
 {
     int i;
-    uint8_t pmap, bitmask;
-    int firstset, state = 0;
+    uint8_t pmap = 0, bitmask = 0;
+    int firstset = 0, state = 0;

     for (i = 0; i < maplen; i++) {
         if (i % 8 == 0) {

Kamala