Better fix for sequencer crash when text strip doesn't have effect data.

This situation happens when a file with a text effect sequencer strip is
loaded in Blender < 2.76 and saved. This destroys the effect data, causing
a crash in Blender ≥ 2.76.

d2f748a222ad19f prevented the crash when opening such a file, but accessing
the strip still caused a crash. This commit fixes that by actually
initialising the invalid strip. Of course this still causes data loss, but
that already happened by opening & overwriting the file in Blender < 2.76.

1 files changed, 13 insertions, 6 deletions

diff --git a/source/blender/blenloader/intern/versioning_270.c b/source/blender/blenloader/intern/versioning_270.c
index 87ccfedcff3..94d335870ca 100644
--- a/source/blender/blenloader/intern/versioning_270.c
+++ b/source/blender/blenloader/intern/versioning_270.c
@@ -1236,12 +1236,19 @@ void blo_do_versions_270(FileData *fd, Library *UNUSED(lib), Main *main)
 
 			SEQ_BEGIN (scene->ed, seq)
 			{
-				if (seq->type == SEQ_TYPE_TEXT) {
-					TextVars *data = seq->effectdata;
-					if (data != NULL && data->color[3] == 0.0f) {
-						copy_v4_fl(data->color, 1.0f);
-						data->shadow_color[3] = 1.0f;
-					}
+				if (seq->type != SEQ_TYPE_TEXT) {
+					continue;
+				}
+
+				if (seq->effectdata == NULL) {
+					struct SeqEffectHandle effect_handle = BKE_sequence_get_effect(seq);
+					effect_handle.init(seq);
+				}
+
+				TextVars *data = seq->effectdata;
+				if (data->color[3] == 0.0f) {
+					copy_v4_fl(data->color, 1.0f);
+					data->shadow_color[3] = 1.0f;
 				}
 			}
 			SEQ_END