sync: Use correct type in size calculation

The previous and current types are the same size, so this wouldn't
have caused a bug in practice, but it is confusing, and would have
been a problem in the unlikely event we changed the size of one of the
types.

Test: sync-unit-tests on bullhead
Change-Id: Ic43b81f3b4ff214af86b6b6d4d02c648f95d0c4b

libsync/sync.c

@@ -145,7 +145,7 @@ struct sync_fence_info_data *sync_fence_info(int fd)
     }
 
     legacy_info->len = sizeof(*legacy_info) +
-                        num_fences * sizeof(struct sync_fence_info);
+                        num_fences * sizeof(struct sync_pt_info);
     strlcpy(legacy_info->name, info->name, sizeof(legacy_info->name));
     legacy_info->status = info->status;