tests/badsymbols.pl: when opening '$incdir' fails include it in the error message

diff --git a/tests/badsymbols.pl b/tests/badsymbols.pl
index d9766cad71bbb1ff84a2877dc3b6140abbadc441..2ef803aafc1573ad5089bd04581c564ee8103b4d 100755 (executable)
--- a/tests/badsymbols.pl
+++ b/tests/badsymbols.pl
@@ -132,7 +132,7 @@ sub scanheader {
 }
 
 
-opendir(my $dh, $incdir) || die "Can't opendir: $!";
+opendir(my $dh, $incdir) || die "Can't opendir $incdir: $!";
 my @hfiles = grep { /\.h$/ } readdir($dh);
 closedir $dh;