easy fix for nagios-plugins instalation

[z3r0l1nk]

error while installing Nagios-Plugins found in Module-Build-0.4007\Makefile.PL at line 11, easy fixed:
change
BEGIN { do 'inc/bootstrap.pl' or die defined($@) ? $@ : $! }
to
BEGIN { do './inc/bootstrap.pl' or die defined($@) ? $@ : $! }

Error gone and successful install.