[PATCH 05/10] CI/lib.sh: stop adding leading whitespace to $MAKEFLAGS

["Ævar Arnfjörð Bjarmason" <avarab@gmail.com>]

In a8c51f77d16 (ci: clear and mark MAKEFLAGS exported just once,
2019-02-07) the assignment of MAKEFLAGS was done up-front to
future-proof this code for the bug fixed in 406f93ae488 (ci: make sure
we build Git parallel, 2019-02-07).

But since 4a6e4b96026 (CI: remove Travis CI support, 2021-11-23) the
--jobs=10 has been an invariant here, so let's assign --jobs=$NPROC to
the MAKEFLAGS right away, this gets rid of the leading whitespace from
the $MAKEFLAGS variable, as it would previously be empty on the first
assignment.

Signed-off-by: Ævar Arnfjörð Bjarmason <avarab@gmail.com>
---
 ci/lib.sh | 11 ++++++-----
 1 file changed, 6 insertions(+), 5 deletions(-)

diff --git a/ci/lib.sh b/ci/lib.sh
index 969ba2ff0d0..3591919ba44 100755
--- a/ci/lib.sh
+++ b/ci/lib.sh
@@ -75,8 +75,11 @@ handle_failed_tests () {
 # GitHub Action doesn't set TERM, which is required by tput
 export TERM=${TERM:-dumb}
 
+# How many jobs to run in parallel?
+NPROC=10
+
 # Clear MAKEFLAGS that may come from the outside world.
-export MAKEFLAGS=
+export MAKEFLAGS=--jobs=$NPROC
 
 if test -n "$SYSTEM_COLLECTIONURI" || test -n "$SYSTEM_TASKDEFINITIONSURI"
 then
@@ -84,9 +87,8 @@ then
 	# We are running in Azure Pipelines
 	CC="${CC:-gcc}"
 
-	export GIT_PROVE_OPTS="--timer --jobs 10 --state=failed,slow,save"
+	export GIT_PROVE_OPTS="--timer --jobs $NPROC --state=failed,slow,save"
 	export GIT_TEST_OPTS="--verbose-log -x --write-junit-xml"
-	MAKEFLAGS="$MAKEFLAGS --jobs=10"
 	test Windows_NT != "$AGENT_OS" ||
 	GIT_TEST_OPTS="--no-chain-lint --no-bin-wrappers $GIT_TEST_OPTS"
 elif test true = "$GITHUB_ACTIONS"
@@ -115,9 +117,8 @@ then
 		return 1
 	}
 
-	export GIT_PROVE_OPTS="--timer --jobs 10"
+	export GIT_PROVE_OPTS="--timer --jobs $NPROC"
 	export GIT_TEST_OPTS="--verbose-log -x --github-workflow-markup"
-	MAKEFLAGS="$MAKEFLAGS --jobs=10"
 	test Windows != "$RUNNER_OS" ||
 	GIT_TEST_OPTS="--no-chain-lint --no-bin-wrappers $GIT_TEST_OPTS"
 else
-- 
2.37.1.996.g651fc6e809f