[PATCH] gitweb: Die if there are parsing errors in config file

Otherwise the errors can propagate, and show in damnest places, and
you would spend your time chasing ghosts instead of debugging real
problem (yes, it is from personal experience).

This follows (parts of) advice in `perldoc -f do` documentation.

Signed-off-by: Jakub Narebski <redacted>
---
This is fallout from my work on [split] "Gitweb output caching" series.
Before I used `die $@ if $@;' in t/t9503/test_cache_interface.pl, tests
failed for no discernable reason...

So I think the same should be done for the gitweb config file.

 gitweb/gitweb.perl |    2 ++
 1 files changed, 2 insertions(+), 0 deletions(-)

diff --git a/gitweb/gitweb.perl b/gitweb/gitweb.perl
index 1f6978a..a5bc359 100755
--- a/gitweb/gitweb.perl
+++ b/gitweb/gitweb.perl

@@ -556,6 +556,8 @@ if (-e $GITWEB_CONFIG) {
 	our $GITWEB_CONFIG_SYSTEM = $ENV{'GITWEB_CONFIG_SYSTEM'} || "++GITWEB_CONFIG_SYSTEM++";
 	do $GITWEB_CONFIG_SYSTEM if -e $GITWEB_CONFIG_SYSTEM;
 }
+# die if there are errors parsing config file
+die $@ if $@;
 
 # Get loadavg of system, to compare against $maxload.
 # Currently it requires '/proc/loadavg' present to get loadavg;