Makefile: disable cURL warnings on gvfs-helper.c

Signed-off-by: Derrick Stolee <dstolee@microsoft.com>

Author: derrickstolee

Makefile

@@ -2589,7 +2589,7 @@ gettext.sp gettext.s gettext.o: GIT-PREFIX
 gettext.sp gettext.s gettext.o: EXTRA_CPPFLAGS = \
 	-DGIT_LOCALE_PATH='"$(localedir_relative_SQ)"'
 
-http-push.sp http.sp http-walker.sp remote-curl.sp imap-send.sp: SP_EXTRA_FLAGS += \
+http-push.sp http.sp http-walker.sp remote-curl.sp imap-send.sp gvfs-helper.sp: SP_EXTRA_FLAGS += \
 	-DCURL_DISABLE_TYPECHECK
 
 pack-revindex.sp: SP_EXTRA_FLAGS += -Wno-memcpy-max-count