Logic fix for reading the config

Author: scottchiefbaker

diff-so-fancy

@@ -621,7 +621,7 @@ sub check_first_run {
 	# If first-run is not set, or it's set to "true"
 	my $first_run     = git_config_boolean('diff-so-fancy.first-run');
 	# See if they're previously set SOME diff-highlight colors
-	my $has_dh_colors = git_config_boolean($i->{'color.diff-highlight.oldnormal'}) || git_config_boolean($i->{'color.diff-highlight.newnormal'});
+	my $has_dh_colors = git_config_boolean('color.diff-highlight.oldnormal') || git_config_boolean('color.diff-highlight.newnormal');
 
 	if (!$first_run || $has_dh_colors) {
 		return 0;