run-command: introduce CHILD_PROCESS_INIT

Most struct child_process variables are cleared using memset first after
declaration.  Provide a macro, CHILD_PROCESS_INIT, that can be used to
initialize them statically instead.  That's shorter, doesn't require a
function call and is slightly more readable (especially given that we
already have STRBUF_INIT, ARGV_ARRAY_INIT etc.).

Helped-by: Johannes Sixt <j6t@kdbg.org>
Signed-off-by: Rene Scharfe <l.s.r@web.de>
Signed-off-by: Junio C Hamano <gitster@pobox.com>

1 files changed, 1 insertions, 2 deletions

diff --git a/editor.c b/editor.c
index 0abbd8d..01c644c 100644
--- a/editor.c
+++ b/editor.c
@@ -38,10 +38,9 @@ int launch_editor(const char *path, struct strbuf *buffer, const char *const *en
 
 	if (strcmp(editor, ":")) {
 		const char *args[] = { editor, real_path(path), NULL };
-		struct child_process p;
+		struct child_process p = CHILD_PROCESS_INIT;
 		int ret, sig;
 
-		memset(&p, 0, sizeof(p));
 		p.argv = args;
 		p.env = env;
 		p.use_shell = 1;