CUDA: Properly construct CUcontext in tests

Tests/CudaOnly/CUBIN/main.cu

@@ -37,7 +37,7 @@ int main()
 
   CUcontext context;
 #if defined(__CUDACC_VER_MAJOR__) && __CUDACC_VER_MAJOR__ >= 13
-  CUctxCreateParams params;
+  CUctxCreateParams params = {};
   params.execAffinityParams = nullptr;
   params.numExecAffinityParams = 0;
   cuCtxCreate(&context, &params, 0, device);

Tests/CudaOnly/Fatbin/main.cu

@@ -37,7 +37,7 @@ int main()
 
   CUcontext context;
 #if defined(__CUDACC_VER_MAJOR__) && __CUDACC_VER_MAJOR__ >= 13
-  CUctxCreateParams params;
+  CUctxCreateParams params = {};
   params.execAffinityParams = nullptr;
   params.numExecAffinityParams = 0;
   cuCtxCreate(&context, &params, 0, device);

Tests/CudaOnly/SeparateCompilationPTX/main.cu

@@ -19,7 +19,7 @@ int main()
 
   CUcontext context;
 #if defined(__CUDACC_VER_MAJOR__) && __CUDACC_VER_MAJOR__ >= 13
-  CUctxCreateParams params;
+  CUctxCreateParams params = {};
   params.execAffinityParams = nullptr;
   params.numExecAffinityParams = 0;
   cuCtxCreate(&context, &params, 0, device);