Migrate code to for_each_dive and for_each_dc

[Dirk Hohndel: this overlapped with my commit 09e7c61feeea ("Consistently
	       use for_each_dive (and use it correctly)") so I took the
	       pieces that I had missed]

Signed-off-by: Anton Lundin <glance@acc.umu.se>
Signed-off-by: Dirk Hohndel <dirk@hohndel.org>

1 files changed, 1 insertions, 4 deletions

diff --git a/dive.c b/dive.c
index 82d44b41b..cc673f122 100644
--- a/dive.c
+++ b/dive.c
@@ -1320,11 +1320,8 @@ static void dc_cylinder_renumber(struct dive *dive, struct divecomputer *dc, int
 static void cylinder_renumber(struct dive *dive, int mapping[])
 {
 	struct divecomputer *dc;
-
-	dc = &dive->dc;
-	do {
+	for_each_dc(dive, dc)
 		dc_cylinder_renumber(dive, dc, mapping);
-	} while ((dc = dc->next) != NULL);
 }
 
 /*