Coverity: Fix 1574354 Uninitialized scalar field

Always zero initialize the `ArrayDesc` data member of `SurfaceMem` in
the CUDA adapter. Simplify other construction logic.

Author: kbenzie

source/adapters/cuda/memory.hpp

@@ -197,20 +197,15 @@ struct SurfaceMem {
              void *HostPtr)
       : Arrays(Context->Devices.size(), CUarray{0}),
         SurfObjs(Context->Devices.size(), CUsurfObject{0}),
-        OuterMemStruct{OuterMemStruct},
-        ImageFormat{ImageFormat}, ImageDesc{ImageDesc}, HostPtr{HostPtr} {
+        OuterMemStruct{OuterMemStruct}, ImageDesc{ImageDesc}, ArrayDesc{},
+        HostPtr{HostPtr} {
     // We have to use hipArray3DCreate, which has some caveats. The height and
     // depth parameters must be set to 0 produce 1D or 2D arrays. image_desc
     // gives a minimum value of 1, so we need to convert the answer.
     ArrayDesc.NumChannels = 4; // Only support 4 channel image
-    ArrayDesc.Flags = 0;       // No flags required
     ArrayDesc.Width = ImageDesc.width;
-    if (ImageDesc.type == UR_MEM_TYPE_IMAGE1D) {
-      ArrayDesc.Height = 0;
-      ArrayDesc.Depth = 0;
-    } else if (ImageDesc.type == UR_MEM_TYPE_IMAGE2D) {
+    if (ImageDesc.type == UR_MEM_TYPE_IMAGE2D) {
       ArrayDesc.Height = ImageDesc.height;
-      ArrayDesc.Depth = 0;
     } else if (ImageDesc.type == UR_MEM_TYPE_IMAGE3D) {
       ArrayDesc.Height = ImageDesc.height;
       ArrayDesc.Depth = ImageDesc.depth;