Fix typo

Co-authored-by: Nikita Popov <[email protected]>

Author: krzysz00

llvm/lib/Target/AMDGPU/AMDGPULowerBufferFatPointers.cpp

@@ -2368,7 +2368,7 @@ static bool containsBufferFatPointers(const Function &F,
   for (const BasicBlock &BB : F)
     for (const Instruction &I : BB) {
       HasFatPointers |= (I.getType() != TypeMap->remapType(I.getType()));
-      // Catch null pointer constasts in loads, stores, etc.
+      // Catch null pointer constants in loads, stores, etc.
       for (const Value *V : I.operand_values())
         HasFatPointers |= (V->getType() != TypeMap->remapType(V->getType()));
     }