sinput.adb (Get_Source_File_Index): Add assertion to guard against an invalid access to an uninitialized slot in...

2007-12-06  Thomas Quinot  <quinot@adacore.com>

	* sinput.adb (Get_Source_File_Index): Add assertion to guard against
	an invalid access to an uninitialized slot in the
	Source_File_Index_Table.

From-SVN: r130860