hardcode patch file location

PKGBUILD

@@ -19,7 +19,7 @@ source=("http://sourceforge.net/projects/tilp/files/tilp2-linux/tilp2-${pkgver}/
         "xdg-basedir.patch")
 md5sums=('daff9cb7a86af8965453e737f8fba781'
          'b678c0fade4b2daffc5662d7094b1544'
-         'e9625355dd5b49dc7cf8f77b843100b9')
+         '8db4c209408cada1b7aa124ca5760e70')
 
 prepare() {
   cd "${srcdir}/tilp2-${pkgver}"

xdg-basedir.patch

@@ -1,6 +1,6 @@
-diff -ruN a/src/tilp-git/tilp/trunk/src/tilp_paths.h b/src/tilp-git/tilp/trunk/src/tilp_paths.h
---- a/src/tilp-git/tilp/trunk/src/tilp_paths.h	2021-10-26 18:30:11.123687827 +0200
-+++ b/src/tilp-git/tilp/trunk/src/tilp_paths.h	2021-10-26 18:31:23.503690390 +0200
+diff -ruN a/src/tilp2-1.18/src/tilp_paths.h b/src/tilp2-1.18/src/tilp_paths.h
+--- a/src/tilp2-1.18/src/tilp_paths.h	2021-10-26 18:30:11.123687827 +0200
++++ b/src/tilp2-1.18/src/tilp_paths.h	2021-10-26 18:31:23.503690390 +0200
 @@ -32,3 +32,3 @@
  #if defined(__LINUX__) || defined(__BSD__) || defined(__MACOSX__)
 -# define INI_FILE  "/.tilp"