Fix: BLI: Assert in generic array move constructor

When assigning a default constructed virtual array,
an assert checking for a non-null type was triggered.

source/blender/blenlib/BLI_generic_array.hh

@@ -99,7 +99,8 @@ class GArray {
   /**
    * Create an array by taking ownership of another array's data, clearing the data in the other.
    */
-  GArray(GArray &&other) : GArray(other.type(), other.data(), other.size(), other.allocator())
+  GArray(GArray &&other)
+      : type_(other.type_), data_(other.data_), size_(other.size_), allocator_(other.allocator_)
   {
     other.data_ = nullptr;
     other.size_ = 0;

source/blender/blenlib/tests/BLI_generic_array_test.cc

@@ -125,4 +125,12 @@ TEST(generic_array, ReinitEmpty)
   EXPECT_EQ(array.as_span().typed<int>()[9], 7);
 }
 
+TEST(generic_array, AssignDefault)
+{
+  GArray<> array(CPPType::get<int32_t>(), int64_t(5));
+  array = {};
+  EXPECT_EQ(array.size(), 0);
+  EXPECT_EQ(array.data(), nullptr);
+}
+
 }  // namespace blender::tests