[libxslt] Add generated cmake file to .gitignore

[Nick Wellnhofer <nwellnhof src gnome org>]

commit 3aadd27592472a2f230a233b0f3d903dd8416c95
Author: Nick Wellnhofer <wellnhofer aevum de>
Date:   Sat Dec 19 16:51:38 2020 +0100

    Add generated cmake file to .gitignore

 .gitignore | 1 +
 1 file changed, 1 insertion(+)
---
diff --git a/.gitignore b/.gitignore
index 22e28dc5..71a84f4d 100644
--- a/.gitignore
+++ b/.gitignore
@@ -28,6 +28,7 @@ libexslt.pc
 libexslt/exsltconfig.h
 libtool
 libxslt-1.1.24.tar.gz
+libxslt-config.cmake
 libxslt.pc
 libxslt.spec
 libxslt.spec.in.orig