meson: use find_program() for add-git-hook.sh

On azure systemd.systemd ci, the build would fail with:
meson.build:53:0: ERROR: Program or command '/home/appuser/fuzzer/tools/add-git-hook.sh' not found or not executable

We use find_program() for all helpers, so let's do it for this one too.
This should solve the issue, whatever it exactly is.

diff --git a/meson.build b/meson.build
index d3bdfada8557f7ecede15ac3ee91933d90fd9792..28042f0ae6674cd63c4bd92a4a30342fbe68ed27 100644 (file)
--- a/meson.build
+++ b/meson.build
@@ -50,9 +50,12 @@ fuzzer_build = want_ossfuzz or want_libfuzzer or want_fuzzbuzz
 #####################################################################
 
 # Try to install the git pre-commit hook
-git_hook = run_command(join_paths(project_source_root, 'tools/add-git-hook.sh'))
-if git_hook.returncode() == 0
-        message(git_hook.stdout().strip())
+add_git_hook_sh = find_program('tools/add-git-hook.sh', required : false)
+if add_git_hook_sh.found()
+        git_hook = run_command(add_git_hook_sh)
+        if git_hook.returncode() == 0
+                message(git_hook.stdout().strip())
+        endif
 endif
 
 #####################################################################