Makefile.am: replace stray `:=` with `=` [ci skip]

`=` is used everywhere else in `Makefile.am` files.

Cherry-picked from #21000

diff --git a/lib/Makefile.am b/lib/Makefile.am
index d02bf02250481082aca57e4f5535febc93b0f35c..8a2bd4e68e4615a9fa87962d9a98c7b8e0743a9d 100644 (file)
--- a/lib/Makefile.am
+++ b/lib/Makefile.am
@@ -164,8 +164,8 @@ UNITV_ = $(UNITV_0)
 $(UNITPROTOS): $(CSOURCES)
        $(UNIT_V)(cd $(srcdir) && @PERL@ ../scripts/extract-unit-protos $(CSOURCES)) > $(top_builddir)/lib/$(UNITPROTOS)
 
-_tidy_cflags :=
-TIDYFLAGS :=
+_tidy_cflags =
+TIDYFLAGS =
 if CURL_WERROR
 TIDYFLAGS += '--warnings-as-errors=*'
 endif

diff --git a/src/Makefile.am b/src/Makefile.am
index 77dbbe26e9d800d25c193040ef4c1f74b5b7abcf..69554ee4900df14ea01f056a78f0e92574dc6c13 100644 (file)
--- a/src/Makefile.am
+++ b/src/Makefile.am
@@ -215,8 +215,8 @@ all-local: checksrc
 endif
 endif
 
-_tidy_cflags :=
-TIDYFLAGS :=
+_tidy_cflags =
+TIDYFLAGS =
 if CURL_WERROR
 TIDYFLAGS += '--warnings-as-errors=*'
 endif