[PATCH 2/4] merge-ll: introduce LL_MERGE_OPTIONS_INIT

["Phillip Wood via GitGitGadget" <gitgitgadget@gmail.com>]

From: Phillip Wood <phillip.wood@dunelm.org.uk>

Introduce a macro to initialize `struct ll_merge_options` in preparation
for the next commit that will add a new member that needs to be
initialized to a non-zero value.

Signed-off-by: Phillip Wood <phillip.wood@dunelm.org.uk>
---
 builtin/checkout.c | 3 +--
 merge-ll.c         | 2 +-
 merge-ll.h         | 2 ++
 merge-ort.c        | 2 +-
 merge-recursive.c  | 2 +-
 5 files changed, 6 insertions(+), 5 deletions(-)

diff --git a/builtin/checkout.c b/builtin/checkout.c
index 067c2519334..6ded58bd95c 100644
--- a/builtin/checkout.c
+++ b/builtin/checkout.c
@@ -262,7 +262,7 @@ static int checkout_merged(int pos, const struct checkout *state,
 	mmbuffer_t result_buf;
 	struct object_id threeway[3];
 	unsigned mode = 0;
-	struct ll_merge_options ll_opts;
+	struct ll_merge_options ll_opts = LL_MERGE_OPTIONS_INIT;
 	int renormalize = 0;
 
 	memset(threeway, 0, sizeof(threeway));
@@ -284,7 +284,6 @@ static int checkout_merged(int pos, const struct checkout *state,
 	read_mmblob(&ours, &threeway[1]);
 	read_mmblob(&theirs, &threeway[2]);
 
-	memset(&ll_opts, 0, sizeof(ll_opts));
 	git_config_get_bool("merge.renormalize", &renormalize);
 	ll_opts.renormalize = renormalize;
 	merge_status = ll_merge(&result_buf, path, &ancestor, "base",
diff --git a/merge-ll.c b/merge-ll.c
index 61e0ae53981..6570707297d 100644
--- a/merge-ll.c
+++ b/merge-ll.c
@@ -401,7 +401,7 @@ enum ll_merge_result ll_merge(mmbuffer_t *result_buf,
 	     const struct ll_merge_options *opts)
 {
 	struct attr_check *check = load_merge_attributes();
-	static const struct ll_merge_options default_opts;
+	static const struct ll_merge_options default_opts = LL_MERGE_OPTIONS_INIT;
 	const char *ll_driver_name = NULL;
 	int marker_size = DEFAULT_CONFLICT_MARKER_SIZE;
 	const struct ll_merge_driver *driver;
diff --git a/merge-ll.h b/merge-ll.h
index e4a20e81a3a..af1ee36abdb 100644
--- a/merge-ll.h
+++ b/merge-ll.h
@@ -82,6 +82,8 @@ struct ll_merge_options {
 	long xdl_opts;
 };
 
+#define LL_MERGE_OPTIONS_INIT {0}
+
 enum ll_merge_result {
 	LL_MERGE_ERROR = -1,
 	LL_MERGE_OK = 0,
diff --git a/merge-ort.c b/merge-ort.c
index 8617babee41..4a02c3ecd99 100644
--- a/merge-ort.c
+++ b/merge-ort.c
@@ -1956,7 +1956,7 @@ static int merge_3way(struct merge_options *opt,
 		      mmbuffer_t *result_buf)
 {
 	mmfile_t orig, src1, src2;
-	struct ll_merge_options ll_opts = {0};
+	struct ll_merge_options ll_opts = LL_MERGE_OPTIONS_INIT;
 	char *base, *name1, *name2;
 	enum ll_merge_result merge_status;
 
diff --git a/merge-recursive.c b/merge-recursive.c
index a0c3e7a2d91..02b7b584f95 100644
--- a/merge-recursive.c
+++ b/merge-recursive.c
@@ -1047,7 +1047,7 @@ static int merge_3way(struct merge_options *opt,
 		      const int extra_marker_size)
 {
 	mmfile_t orig, src1, src2;
-	struct ll_merge_options ll_opts = {0};
+	struct ll_merge_options ll_opts = LL_MERGE_OPTIONS_INIT;
 	char *base, *name1, *name2;
 	enum ll_merge_result merge_status;
 
-- 
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