* dwarfread.c (dbsize): New variable to hold size of dwarf info.

	* dwarfread.c (dbsize):  New variable to hold size of dwarf info.
	* dwarfread.c (dwarf_build_psymtabs):  Rename dbsize parameter to
	dbfsize and use it to initialize new local file scope dbsize.
	* dwarfread.c (read_ofile_symtab):  Initialize dbsize and use it.
	* dwarfread.c (basicdieinfo):  Use dbsize to check for oversize
	DIEs as well as the current check for undersize DIEs.  This helps
	to gracefully detect and reject corrupted DIE information.