anv: fix release build unused variable warnings

Signed-off-by: Grazvydas Ignotas <notasas@gmail.com>
Reviewed-by: Eduardo Lima Mitev <elima@igalia.com>
diff --git a/src/intel/vulkan/anv_blorp.c b/src/intel/vulkan/anv_blorp.c
index 159e4a0..b431d6a 100644
--- a/src/intel/vulkan/anv_blorp.c
+++ b/src/intel/vulkan/anv_blorp.c
@@ -909,7 +909,8 @@
                                          state_offset);
    if (bt_state.map == NULL) {
       /* We ran out of space.  Grab a new binding table block. */
-      VkResult result = anv_cmd_buffer_new_binding_table_block(cmd_buffer);
+      MAYBE_UNUSED VkResult result =
+         anv_cmd_buffer_new_binding_table_block(cmd_buffer);
       assert(result == VK_SUCCESS);
 
       /* Re-emit state base addresses so we get the new surface state base
diff --git a/src/intel/vulkan/genX_cmd_buffer.c b/src/intel/vulkan/genX_cmd_buffer.c
index f761d9a..6131cfb 100644
--- a/src/intel/vulkan/genX_cmd_buffer.c
+++ b/src/intel/vulkan/genX_cmd_buffer.c
@@ -697,7 +697,7 @@
    assert(!urb_low_bw || cfg->n[GEN_L3P_URB] == cfg->n[GEN_L3P_SLM]);
 
    /* Minimum number of ways that can be allocated to the URB. */
-   const unsigned n0_urb = (devinfo->is_baytrail ? 32 : 0);
+   MAYBE_UNUSED const unsigned n0_urb = devinfo->is_baytrail ? 32 : 0;
    assert(cfg->n[GEN_L3P_URB] >= n0_urb);
 
    uint32_t l3sqcr1, l3cr2, l3cr3;