memory: fix incorrect pointer comparison when freeing cuda memory

This fixes the following warning spotted by gcc 7:
memory.c: In function ‘free_mem_cudamalloc’:
memory.c:277:22: error: comparison between pointer and integer [-Werror]
  if (td->dev_mem_ptr != NULL)
                      ^~

Signed-off-by: Sitsofe Wheeler <sitsofe@yahoo.com>

1 files changed, 1 insertions, 1 deletions

diff --git a/memory.c b/memory.c
index 5f0225f7..6cf73333 100644
--- a/memory.c
+++ b/memory.c
@@ -274,7 +274,7 @@ static int alloc_mem_cudamalloc(struct thread_data *td, size_t total_mem)
 static void free_mem_cudamalloc(struct thread_data *td)
 {
 #ifdef CONFIG_CUDA
-	if (td->dev_mem_ptr != NULL)
+	if (td->dev_mem_ptr)
 		cuMemFree(td->dev_mem_ptr);
 
 	if (cuCtxDestroy(td->cu_ctx) != CUDA_SUCCESS)