[xen master] CI: Simplify the MUSL check

[patchbot@xxxxxxx]

commit c1df06afe578f698ebe91a1e3817463b9d165123
Author:     Andrew Cooper <andrew.cooper3@xxxxxxxxxx>
AuthorDate: Thu Dec 29 22:19:40 2022 +0000
Commit:     Andrew Cooper <andrew.cooper3@xxxxxxxxxx>
CommitDate: Wed Jan 4 13:22:59 2023 +0000

    CI: Simplify the MUSL check
    
    There's no need to do ad-hoc string parsing.  Use grep -q instead.
    
    No functional change.
    
    Signed-off-by: Andrew Cooper <andrew.cooper3@xxxxxxxxxx>
    Reviewed-by: Stefano Stabellini <sstabellini@xxxxxxxxxx>
---
 automation/scripts/build | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/automation/scripts/build b/automation/scripts/build
index 206312ecc7..f2f5e55bc0 100755
--- a/automation/scripts/build
+++ b/automation/scripts/build
@@ -65,7 +65,7 @@ else
         cfgargs+=("--disable-stubdom")
     fi
 
-    if  ! test -z "$(ldd /bin/ls|grep musl|head -1)"; then
+    if ldd /bin/ls | grep -q musl; then
         # disable --disable-werror for QEMUU when building with MUSL
         cfgargs+=("--with-extra-qemuu-configure-args=\"--disable-werror\"")
         # SeaBIOS doesn't build on MUSL systems
--
generated by git-patchbot for /home/xen/git/xen.git#master