[libvtrutil][Warnings] Explicitly Initialized Arrays

A couple of arrays in testcases were not explicitly initialized which
was causing the compiler to warn that the array may not have been
initialized.

Explicitly initialized the arrays to 0.

Author: AlexandreSinger

libs/libvtrutil/test/test_array_view.cpp

@@ -8,7 +8,7 @@ struct test_tag;
 using TestStrongId = vtr::StrongId<test_tag>;
 
 TEST_CASE("Array view", "[array_view/array_view]") {
-    std::array<uint16_t, 10> arr;
+    std::array<uint16_t, 10> arr = {0};
     vtr::array_view<uint16_t> arr_view(arr.data(), arr.size());
 
     const vtr::array_view<uint16_t>& carr_view = arr_view;
@@ -56,7 +56,7 @@ TEST_CASE("Array view", "[array_view/array_view]") {
 }
 
 TEST_CASE("Array view id", "[array_view/array_view_id]") {
-    std::array<uint16_t, 10> arr;
+    std::array<uint16_t, 10> arr = {0};
     vtr::array_view_id<TestStrongId, uint16_t> arr_view(arr.data(), arr.size());
 
     const vtr::array_view_id<TestStrongId, uint16_t>& carr_view = arr_view;