[compiler-rt] [scudo] Refactor store() and retrieve(). (PR #102024)

[via llvm-commits]

================
@@ -692,8 +711,10 @@ void *MapAllocator<Config>::allocate(const Options &Options, uptr Size,
   if (Alignment < PageSize && Cache.canCache(MinNeededSizeForCache)) {
     LargeBlock::Header *H;
     bool Zeroed;
-    if (Cache.retrieve(Options, Size, Alignment, getHeadersSize(), &H,
-                       &Zeroed)) {
+
+    H = tryAllocateFromCache(Options, Size, Alignment, getHeadersSize(),
+                             Zeroed);
+    if (H != nullptr) {
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ChiaHungDuan wrote:

Can we also do this in `tryAllocateFromCache`? 
```
void *Ptr = tryAllocateFromCache(...);
if (!Ptr)
  return Ptr;
 
// .. the remaining logic
```

https://github.com/llvm/llvm-project/pull/102024