Clean up uses of SAL_U/SAL_W: helpcompiler

Change-Id: I0b9c7959cae65428ed1e80753e31f3ee9d726fc4

helpcompiler/inc/HelpCompiler.hxx

@@ -92,7 +92,7 @@ namespace fs
         {
             OUString ustrSystemPath;
             osl::File::getSystemPathFromFileURL(data, ustrSystemPath);
-            return SAL_W(ustrSystemPath.getStr());
+            return reinterpret_cast<wchar_t const *>(ustrSystemPath.getStr());
         }
 #endif
         std::string toUTF8() const