[PATCH v4 05/23] Makefile: remove "mv $@ $@+" dance redundant to .DELETE_ON_ERROR

Since 7b76d6bf221 (Makefile: add and use the ".DELETE_ON_ERROR" flag,
2021-06-29) we don't need to guard the clobbering of $@ with this sort
of "mv $@+ $@" pattern in these cases where we're merely generating a
file that'll be used as a dependency for other files, as in this case
for GIT-PERL-HEADER.

We have had a hard dependency on .DELETE_ON_ERROR since
7b76d6bf221 (Makefile: add and use the ".DELETE_ON_ERROR" flag,
2021-06-29), so this is a pure cleanup as a follow-up to that
commit. Support for the ".DELETE_ON_ERROR" target itself is much older
than any GNU make version we support, it was added to GNU make in
1994.

Signed-off-by: Ævar Arnfjörð Bjarmason <redacted>
---
 Makefile | 3 +--
 1 file changed, 1 insertion(+), 2 deletions(-)

diff --git a/Makefile b/Makefile
index a71fba15e30..284725099c9 100644
--- a/Makefile
+++ b/Makefile

@@ -2349,8 +2349,7 @@ GIT-PERL-HEADER: $(PERL_HEADER_TEMPLATE) GIT-PERL-DEFINES Makefile
 	    -e 's=@@PERLLIBDIR_REL@@=$(perllibdir_relative_SQ)=g' \
 	    -e 's=@@GITEXECDIR_REL@@=$(gitexecdir_relative_SQ)=g' \
 	    -e 's=@@LOCALEDIR_REL@@=$(localedir_relative_SQ)=g' \
-	    $< >$@+ && \
-	mv $@+ $@
+	    $< >$@
 
 .PHONY: perllibdir
 perllibdir:

-- 
2.34.0.796.g2c87ed6146a