[test failure] t4114 binary file becomes symlink

Hi,

Running 'sh t4114-apply-typechange.sh --verbose --debug' fails since its introduction by b67b9612e1a90ae093445abeaeff930e9f4cf936 with this output:

   * expecting success: 
   	git checkout -f foo-becomes-binary &&
   	git diff-tree -p --binary HEAD foo-symlinked-to-bar > patch &&
   	git apply --index < patch
   	
   ./test-lib.sh: line 234: 26816 Segmentation fault      git checkout -f
   foo-becomes-binary
   * FAIL 8: binary file becomes symlink
   	
   		git checkout -f foo-becomes-binary &&
   		git diff-tree -p --binary HEAD foo-symlinked-to-bar > patch &&
   		git apply --index < patch
   		
   
   diff --git a/foo b/foo
   deleted file mode 120000
   index ba0e162..0000000
   --- a/foo
   +++ /dev/null
   @@ -1 +0,0 @@
   -bar
   \ No newline at end of file
   diff --git a/foo b/foo
   new file mode 100644
   index 0000000..ab26de5
   --- /dev/null
   +++ b/foo
   @@ -0,0 +1 @@
   +how far is the sun?

The filesystem used is ext3 (2.6.26-gentoo-r4-v7).

I guess it's not really expected. So, I'll start my own research but I don't know this code.

I can provide more tests if needed.