[llvm] [DebugInfo] Get rid of redundant conditional checks in `/DebugInfo` (PR #92111)

[Youngsuk Kim via llvm-commits]

================
@@ -246,20 +246,17 @@ class LVObject {
   virtual void setName(StringRef ObjectName) {}
 
   LVElement *getParent() const {
-    assert((!Parent.Element ||
-            (Parent.Element && static_cast<LVElement *>(Parent.Element))) &&
+    assert((!Parent.Element || static_cast<LVElement *>(Parent.Element)) &&
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JOE1994 wrote:

Upon another look, the original assert (before this mod) looks flawed.
`(! Parent.Element)` always evaluates to `true` except for when `Parent.Element` is an all-1 bitvector..
Could you update this and the other 2 assert conditions like below?

```suggestion
    assert(((Parent.Element == nullptr) || static_cast<LVElement *>(Parent.Element)) &&
```

https://github.com/llvm/llvm-project/pull/92111