[llvm] [IR] Replace uses of IRBuilder::getInt8PtrTy with getPtrTy. NFC (PR #73154)

[Björn Pettersson via llvm-commits]

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@@ -1806,7 +1806,7 @@ OpenMPIRBuilder::createTask(const LocationDescription &Loc,
         ++P;
       }
 
-      DepArrayPtr = Builder.CreateBitCast(DepArray, Builder.getInt8PtrTy());
+      DepArrayPtr = Builder.CreateBitCast(DepArray, Builder.getPtrTy());
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bjope wrote:

`DepArrayPtr = DepArrays; ` would still be needed afaict (so not just remove)

https://github.com/llvm/llvm-project/pull/73154