CUDA: fix codestyle nit

Author: IMbackK

ggml/src/ggml-cuda/ggml-cuda.cu

@@ -100,8 +100,7 @@ int ggml_cuda_get_device() {
 static cudaError_t ggml_cuda_device_malloc(void ** ptr, size_t size, int device) {
     ggml_cuda_set_device(device);
     cudaError_t err;
-    if (getenv("GGML_CUDA_ENABLE_UNIFIED_MEMORY") != nullptr)
-    {
+    if (getenv("GGML_CUDA_ENABLE_UNIFIED_MEMORY") != nullptr) {
         err = cudaMallocManaged(ptr, size);
 #if defined(GGML_USE_HIP)
         if (err == hipSuccess) {
@@ -119,9 +118,7 @@ static cudaError_t ggml_cuda_device_malloc(void ** ptr, size_t size, int device)
             err = cudaMalloc(ptr, size);
         }
 #endif // defined(GGML_USE_HIP)
-    }
-    else
-    {
+    } else {
         err = cudaMalloc(ptr, size);
     }
     return err;