Leave tk build directory to restore original path.
diff --git a/Tools/buildbot/external.bat b/Tools/buildbot/external.bat
index c6d252d..463285f 100644
--- a/Tools/buildbot/external.bat
+++ b/Tools/buildbot/external.bat
@@ -28,6 +28,7 @@
    cd tk8.4.12\win

    nmake -f makefile.vc TCLDIR=..\..\tcl8.4.12

    nmake -f makefile.vc TCLDIR=..\..\tcl8.4.12 INSTALLDIR=..\..\tcltk install

+   cd ..\..

 )

 

 @rem sqlite