suppress silly messages when checktree is not called from the root of the tree

but nevertheless has no specific arguments to work with. it will traverse
the tree from there, but obviously cannot find our externals.


git-svn-id: svn://svn.mplayerhq.hu/mplayer/trunk@25312 b3059339-0415-0410-9bf9-f77b7e298cf2

TOOLS/checktree.sh

@@ -67,7 +67,7 @@ all_filenames() {
         | grep -v "^\./version\.h\|\.o$\|\.a$\|configure.log\|^\./help_mp.h"
     else
         for p in . libavcodec libavutil libavformat libpostproc ; do
-            svn info -R $p | sed -n \
+            svn info -R $p 2>/dev/null | sed -n \
                 '/Path:/bb; :a; d; b; :b; s/Path: /.\//; h; :c; n;
                  /Node Kind:/bd; bc; :d; /directory/ba; g; p;'
         done