pg_wrapper: Restrict libreadline multiarch matching to native architecture

pg_wrapper

@@ -17,6 +17,8 @@
 
 use strict;
 
+use POSIX;
+
 use lib '/usr/share/postgresql-common';
 use PgCommon;
 
@@ -100,7 +102,8 @@ my $cmd = get_program_path ($cmdname, $version);
 # libreadline is a lot better than libedit, so prefer that
 if ($cmdname eq 'psql') {
     my @readlines;
-    push @readlines, sort(</lib/*/libreadline.so.*>);
+    my $arch = (POSIX::uname)[4];
+    push @readlines, sort(</lib/$arch-*/libreadline.so.*>);
     push @readlines, sort(</lib/libreadline.so.*>);
     if (@readlines) {
 	$ENV{'LD_PRELOAD'} = ($ENV{'LD_PRELOAD'} or '') . ':' . $readlines[-1];