buildbot: also archive wasmate.py
diff --git a/buildbot/build.py b/buildbot/build.py
index 6af58a0..9ce98f2 100755
--- a/buildbot/build.py
+++ b/buildbot/build.py
@@ -302,7 +302,9 @@
 def ArchiveLLVM():
   if LLVM_REVISION == 'origin/master':
     return
-  sexpr = os.path.join(LLVM_INSTALL_DIR, 'bin', 'sexpr-wasm')
+  ibin = os.path.join(LLVM_INSTALL_DIR, 'bin')
+  shutil.copy2(LINKER, ibin)
+  sexpr = os.path.join(ibin, 'sexpr-wasm')
   assert os.path.isfile(sexpr), 'Expected binary %s' % sexpr
   Archive('LLVM', LLVM_INSTALL_TAR)