Fix one more use of wsprintf
Fix one more use of wsprintf

...that would fall into the same trap as
50bd5c11f551f5274be9a4411c5ddcbd32bd9a03 "wsprintf is broken by design and never
writes more than 1024 characters" if the length were not currently bounded by
2 * MAX_PATH + x < 1024 anyway.

Change-Id: I2503ba0a9df960f2fdb51925d5fbbcff5bdb998a

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