Core/Utils: Handle UTF-8 conversion errors

Replace the output string when a UTF-8 conversion error happen with an error message instead of using an empty string, swallowing any message that the caller wanted to log.

src/common/Utilities/Util.cpp

@@ -293,9 +293,23 @@ bool Utf8toWStr(char const* utf8str, size_t csize, wchar_t* wstr, size_t& wsize)
     }
     catch (std::exception)
     {
-        if (wsize > 0)
+        // Replace the converted string with an error message if there is enough space
+        // Otherwise just return an empty string
+        wchar_t const* errorMessage = L"An error occurred converting string from UTF-8 to WStr";
+        size_t errorMessageLength = wcslen(errorMessage);
+        if (wsize >= errorMessageLength)
+        {
+            wcscpy(wstr, errorMessage);
+            wsize = wcslen(wstr);
+        }
+        else if (wsize > 0)
+        {
             wstr[0] = L'\0';
-        wsize = 0;
+            wsize = 0;
+        }
+        else
+            wsize = 0;
+
         return false;
     }