Fix small typo (parenthesis missing)

Fixes #5207 (another PR)
Reviewed-by: NBen Kaduk <kaduk@mit.edu>
(Merged from https://github.com/openssl/openssl/pull/5210)

Configure

@@ -1155,7 +1155,7 @@ if ($target =~ /^mingw/ && `$config{cc} --target-help 2>&1` =~ m/-mno-cygwin/m)
 
 if ($target =~ /linux.*-mips/ && !$disabled{asm}
         && !grep { $_ !~ /-m(ips|arch=)/ } (@{$user{CFLAGS}},
-                                            @{$useradd{CFLAGS}}) {
+                                            @{$useradd{CFLAGS}})) {
 	# minimally required architecture flags for assembly modules
 	my $value;
 	$value = '-mips2' if ($target =~ /mips32/);