Remove useless checks for NULL before freeing

This patch has been generated by the following Coccinelle semantic
patch:

// Remove useless checks for NULL before freeing
//
// free (NULL) is a no-op, so there is no need to avoid it

@@
expression E;
@@
+ free (E);
+ E = NULL;
- if (unlikely (E != NULL)) {
-   free(E);
(
-   E = NULL;
|
-   E = 0;
)
   ...
- }

@@
expression E;
type T;
@@
+ free ((T) E);
+ E = NULL;
- if (unlikely (E != NULL)) {
-   free((T) E);
(
-   E = NULL;
|
-   E = 0;
)
   ...
- }

@@
expression E;
@@
+ free (E);
- if (unlikely (E != NULL)) {
-   free (E);
- }

@@
expression E;
type T;
@@
+ free ((T) E);
- if (unlikely (E != NULL)) {
-   free ((T) E);
- }

Reviewed-by: Brian Paul <brianp@vmware.com>

1 files changed, 1 insertions, 2 deletions

diff --git a/src/gallium/state_trackers/xvmc/subpicture.c b/src/gallium/state_trackers/xvmc/subpicture.c
index f9f646b..8e96ce6 100644
--- a/src/gallium/state_trackers/xvmc/subpicture.c
+++ b/src/gallium/state_trackers/xvmc/subpicture.c
@@ -115,8 +115,7 @@ static Status Validate(Display *dpy, XvPortID port, int surface_type_id, int xvi
 
    subpictures = XvMCListSubpictureTypes(dpy, port, surface_type_id, &num_subpics);
    if (num_subpics < 1) {
-      if (subpictures)
-         free(subpictures);
+      free(subpictures);
       return BadMatch;
    }
    if (!subpictures)