[folks] core: Add [PrintfFormat] attributes to some internal debug methods

[Philip Withnall <pwithnall src gnome org>]

commit 9565b4711ff6499344fb607494705a8d3e60a0c7
Author: Philip Withnall <philip withnall collabora co uk>
Date:   Fri Oct 25 11:59:28 2013 +0100

    core: Add [PrintfFormat] attributes to some internal debug methods

 folks/internal.vala |    2 ++
 1 files changed, 2 insertions(+), 0 deletions(-)
---
diff --git a/folks/internal.vala b/folks/internal.vala
index 1182ea7..1d4030f 100644
--- a/folks/internal.vala
+++ b/folks/internal.vala
@@ -40,6 +40,7 @@ namespace Folks.Internal
 
 #if ENABLE_PROFILING
   /* See: http://people.gnome.org/~federico/news-2006-03.html#timeline-tools */
+  [PrintfFormat]
   private static void profiling_markv (string format, va_list args)
     {
       var formatted = format.vprintf (args);
@@ -58,6 +59,7 @@ namespace Folks.Internal
    * @param ... message arguments
    * @since 0.7.2
    */
+  [PrintfFormat]
   public static void profiling_point (string format, ...)
     {
 #if ENABLE_PROFILING