Clean up allocated memory on error in CordbEval::NewParameterizedObje…

…ct (dotnet#50371)

pArgData is allocated in this piece of code; if we are failing and
returning early, we should deallocate this memory to avoid a memory
leak.

src/coreclr/debug/di/rsthread.cpp

@@ -9790,6 +9790,7 @@ HRESULT CordbEval::NewParameterizedObject(ICorDebugFunction * pConstructor,
 
             if (FAILED(hr))
             {
+                delete [] pArgData;
                 return hr;
             }
         }