explicit ScopedMemoryContext()

in src/afs.cc [142:146]

• 5 lines of code
• 1 McCabe index (conditional complexity)

	explicit ScopedMemoryContext(MemoryContext memoryContext)
		: memoryContext_(memoryContext), oldMemoryContext_(nullptr)
	{
		oldMemoryContext_ = MemoryContextSwitchTo(memoryContext_);
	}