index-pack: fix compilation with NO_PTHREADS

diff --git a/git-mergetool--lib.sh b/git-mergetool--lib.sh
index a280f498179eb2747b32ba5de4111ccb32024848..c45a020301c16614057912b9a26d1466a94654a9 100644 (file)
--- a/git-mergetool--lib.sh
+++ b/git-mergetool--lib.sh
@@ -1,5 +1,4 @@
-#!/bin/sh
-# git-mergetool--lib is a library for common merge tool functions
+# git-mergetool--lib is a shell library for common merge tool functions
 
 : ${MERGE_TOOLS_DIR=$(git --exec-path)/mergetools}