gallium/util: change assertion to conditional in util_bitmask_destroy()

If we fail to create a context in the VMware driver we call this function
unconditionally to free a bunch of bit vectors.  Instead of asserting on
a null pointer, just no-op.

Reviewed-by: Jose Fonseca <jfonseca@vmware.com>

diff --git a/src/gallium/auxiliary/util/u_bitmask.c b/src/gallium/auxiliary/util/u_bitmask.c
index c22f506..b15dfd8 100644 (file)
--- a/src/gallium/auxiliary/util/u_bitmask.c
+++ b/src/gallium/auxiliary/util/u_bitmask.c
@@ -320,9 +320,9 @@ util_bitmask_get_first_index(struct util_bitmask *bm)
 void
 util_bitmask_destroy(struct util_bitmask *bm)
 {
-   assert(bm);
-
-   FREE(bm->words);
-   FREE(bm);
+   if (bm) {
+      FREE(bm->words);
+      FREE(bm);
+   }
 }