fdo#64671 Some special RTF characters were not skipped correctly
fdo#64671 Some special RTF characters were not skipped correctly

Some special characters, like { and }, were not skipped when they
occured as a replacement character for \uN keyword.

Change-Id: I19b66a290cd9880924774fa89bb29df280e44a3c

JurassicWordExcel/core,JurassicWordExcel/core,JurassicWordExcel/core,JurassicWordExcel/core,JurassicWordExcel/core,JurassicWordExcel/core,JurassicWordExcel/core,JurassicWordExcel/core,JurassicWordExcel/core,JurassicWordExcel/core