Configure: clean away perl syntax faults

The faults aren't fatal (i.e. perl just shrugs), but are curious.

Reviewed-by: Tomas Mraz <tmraz@fedoraproject.org>
(Merged from https://github.com/openssl/openssl/pull/13824)

Configure

@@ -2260,7 +2260,7 @@ EOF
                     push @{$check_exist{$s}}, $ddest;
                     my $o = $_;
                     $o =~ s/\.rc$/.res/; # Resource configuration
-                    my $o = cleanfile($buildd, $o, $blddir);
+                    $o = cleanfile($buildd, $o, $blddir);
                     $unified_info{sources}->{$ddest}->{$o} = -1;
                     $unified_info{sources}->{$o}->{$s} = -1;
                 } else {
@@ -2296,7 +2296,7 @@ EOF
                     push @{$check_exist{$s}}, $ddest;
                     my $o = $_;
                     $o =~ s/\.rc$/.res/; # Resource configuration
-                    my $o = cleanfile($buildd, $o, $blddir);
+                    $o = cleanfile($buildd, $o, $blddir);
                     $unified_info{shared_sources}->{$ddest}->{$o} = -1;
                     $unified_info{sources}->{$o}->{$s} = -1;
                 } elsif ($s =~ /\.ld$/) {