* Every FAIL on "Premature EOF" is preceded by a call to this function, which role is to restore the
* previous buffer if we reached the EOF /of an include file/. Its return code is used to avoid the
* error message in that case.
* Every FAIL on "Premature EOF" is preceded by a call to this function, which role is to restore the
* previous buffer if we reached the EOF /of an include file/. Its return code is used to avoid the
* error message in that case.