Hello,

There is an issue in symtab_from_filename function, it may buffer 
overflow by advancing past the end of the string.

The patch makes sure we do not advance past zero terminator.

Thanks,

Aleksandar Ristovski
QNX Software Systems


ChangeLog:
Aleksandar Ristovski <aristovski@qnx.com>

         * linespec.c (symtab_from_filename): Check for the end of string.