pre-commit-hook: Also check xsl files for whitespace and tabs

Change-Id: Ibc1520735ab20787496564e8561a6bb5920a5538
Reviewed-on: https://gerrit.libreoffice.org/42280Tested-by: Jenkins <ci@libreoffice.org>
Reviewed-by: Samuel Mehrbrodt <Samuel.Mehrbrodt@cib.de>

.git-hooks/pre-commit

@@ -14,8 +14,8 @@ $ENV{LC_ALL} = "C";
 sub check_whitespaces($)
 {
     my ($h) = @_;
-    my $src_limited = "c|cpp|cxx|h|hrc|hxx|idl|inl|java|swift|map|MK|pmk|pl|pm|sdi|sh|src|tab|ui|xcu|xml";
-    my $src_full = "c|cpp|cxx|h|hrc|hxx|idl|inl|java|swift|map|mk|MK|pmk|pl|pm|sdi|sh|src|tab|ui|xcu|xml";
+    my $src_limited = "c|cpp|cxx|h|hrc|hxx|idl|inl|java|swift|map|MK|pmk|pl|pm|sdi|sh|src|tab|ui|xcu|xml|xsl";
+    my $src_full = "c|cpp|cxx|h|hrc|hxx|idl|inl|java|swift|map|mk|MK|pmk|pl|pm|sdi|sh|src|tab|ui|xcu|xml|xsl";
 
     my $found_bad = 0;
     my $filename;