Fix #30315: Temporary proxy files are not erased and old proxys are not updated if the proxy is built more then once (windows)

Two issues are fixed here:
- On windows rename() doesn't actually renames file if destination file is already exist.
  Solved by ulinking previously built proxy/timecode.
- IMB_TC_MAX_SLOT was set to incorrect value leading to record run timecode calculating
  several times.

1 files changed, 3 insertions, 0 deletions

diff --git a/source/blender/imbuf/intern/indexer.c b/source/blender/imbuf/intern/indexer.c
index ade63aa1e9c..f36db61f27a 100644
--- a/source/blender/imbuf/intern/indexer.c
+++ b/source/blender/imbuf/intern/indexer.c
@@ -147,6 +147,7 @@ void IMB_index_builder_finish(anim_index_builder * fp, int rollback)
 	if (rollback) {
 		unlink(fp->temp_name);
 	} else {
+		unlink(fp->name);
 		rename(fp->temp_name, fp->name);
 	}
 
@@ -687,6 +688,7 @@ static void free_proxy_output_ffmpeg(struct proxy_output_ctx * ctx,
 	} else {
 		get_proxy_filename(ctx->anim, ctx->proxy_size, 
 		                   fname, FALSE);
+		unlink(fname);
 		rename(fname_tmp, fname);
 	}
 	
@@ -1043,6 +1045,7 @@ static void index_rebuild_fallback(struct anim * anim,
 			if (*stop) {
 				unlink(fname_tmp);
 			} else {
+				unlink(fname);
 				rename(fname_tmp, fname);
 			}
 		}