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, 1 insertions, 2 deletions

diff --git a/src/mesa/main/imports.c b/src/mesa/main/imports.c
index 2985ad777cf..934a2d05f75 100644
--- a/src/mesa/main/imports.c
+++ b/src/mesa/main/imports.c
@@ -218,8 +218,7 @@ _mesa_realloc(void *oldBuffer, size_t oldSize, size_t newSize)
    void *newBuffer = malloc(newSize);
    if (newBuffer && oldBuffer && copySize > 0)
       memcpy(newBuffer, oldBuffer, copySize);
-   if (oldBuffer)
-      free(oldBuffer);
+   free(oldBuffer);
    return newBuffer;
 }