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 <[email protected]>

1 files changed, 4 insertions, 8 deletions

diff --git a/src/mesa/swrast/s_renderbuffer.c b/src/mesa/swrast/s_renderbuffer.c
index e468bdb16b0..b1fb57823f4 100644
--- a/src/mesa/swrast/s_renderbuffer.c
+++ b/src/mesa/swrast/s_renderbuffer.c
@@ -119,10 +119,8 @@ soft_renderbuffer_storage(struct gl_context *ctx, struct gl_renderbuffer *rb,
    bpp = _mesa_get_format_bytes(rb->Format);
 
    /* free old buffer storage */
-   if (srb->Buffer) {
-      free(srb->Buffer);
-      srb->Buffer = NULL;
-   }
+   free(srb->Buffer);
+   srb->Buffer = NULL;
 
    srb->RowStride = width * bpp;
 
@@ -170,10 +168,8 @@ soft_renderbuffer_delete(struct gl_renderbuffer *rb)
 {
    struct swrast_renderbuffer *srb = swrast_renderbuffer(rb);
 
-   if (srb->Buffer) {
-      free(srb->Buffer);
-      srb->Buffer = NULL;
-   }
+   free(srb->Buffer);
+   srb->Buffer = NULL;
    _mesa_delete_renderbuffer(rb);
 }