fixup the const cast

Author: zibaiwan

sycl/include/sycl/ext/intel/experimental/pipes.hpp

@@ -104,7 +104,7 @@ class pipe : public pipe_base {
 
     const void *HostPipePtr = &m_Storage;
     const std::string PipeName = pipe_base::get_pipe_name(HostPipePtr);
-    void *DataPtr = const_cast<void *>(&Data);
+    void *DataPtr = const_cast<_dataT *>(&Data);
 
     event E = Q.submit([=](handler &CGH) {
       CGH.ext_intel_write_host_pipe(
@@ -249,7 +249,7 @@ class pipe : public pipe_base {
     }
     const void *HostPipePtr = &m_Storage;
     const std::string PipeName = pipe_base::get_pipe_name(HostPipePtr);
-    void *DataPtr = const_cast<void *>(&Data);
+    void *DataPtr = const_cast<_dataT *>(&Data);
     event E = Q.submit([=](handler &CGH) {
       CGH.ext_intel_write_host_pipe(PipeName, DataPtr,
                                          sizeof(_dataT), true /*blocking */);