fix format string for Visual Studio

The "z" size specifier is not supported by Visual Studio.
Cast to unsigned long and use "l" specifier as the type has
enough precision for this vector.

Signed-off-by: Frediano Ziglio <fziglio@redhat.com>
Acked-by: Christophe Fergeau <cfergeau@redhat.com>

1 files changed, 2 insertions, 1 deletions

diff --git a/vdagent/desktop_layout.cpp b/vdagent/desktop_layout.cpp
index 11ad009..a10d898 100644
--- a/vdagent/desktop_layout.cpp
+++ b/vdagent/desktop_layout.cpp
@@ -147,7 +147,8 @@ void DesktopLayout::set_displays()
             break;
         }
         if (display_id >= _displays.size()) {
-            vd_printf("display_id %lu out of range, #displays %zu" , display_id, _displays.size());
+            vd_printf("display_id %lu out of range, #displays %lu",
+                      display_id, (unsigned long) _displays.size());
             break;
         }
         DisplayMode * mode(_displays.at(display_id));