make sure to put quotes around -config argument, in case of spaces

RT#4486
Reviewed-by: NMatt Caswell <matt@openssl.org>

test/recipes/80-test_ca.t

@@ -24,17 +24,17 @@ rmtree("demoCA", { safe => 0 });
 
 plan tests => 4;
  SKIP: {
-     $ENV{OPENSSL_CONFIG} = "-config ".srctop_file("test", "CAss.cnf");
+     $ENV{OPENSSL_CONFIG} = '-config "'.srctop_file("test", "CAss.cnf").'"';
      skip "failed creating CA structure", 3
 	 if !ok(run(perlapp(["CA.pl","-newca"], stdin => undef)),
 		'creating CA structure');
 
-     $ENV{OPENSSL_CONFIG} = "-config ".srctop_file("test", "Uss.cnf");
+     $ENV{OPENSSL_CONFIG} = '-config "'.srctop_file("test", "Uss.cnf").'"';
      skip "failed creating new certificate request", 2
 	 if !ok(run(perlapp(["CA.pl","-newreq"])),
 		'creating CA structure');
 
-     $ENV{OPENSSL_CONFIG} = "-config ".$std_openssl_cnf;
+     $ENV{OPENSSL_CONFIG} = '-config "'.$std_openssl_cnf.'"';
      skip "failed to sign certificate request", 1
 	 if !is(yes(cmdstr(perlapp(["CA.pl", "-sign"]))), 0,
 		'signing certificate request');