Make OpenSSL compile with no-rc4

Reviewed-by: Matt Caswell <matt@openssl.org>

apps/rsa.c

diff --git a/apps/rsa.c b/apps/rsa.c
index e13c14f..419e504 100644
--- a/apps/rsa.c
+++ b/apps/rsa.c
@@ -115,8 +115,9 @@
     char *engine = NULL;
 # endif
     int modulus = 0;
-
+#ifndef OPENSSL_NO_RC4
     int pvk_encr = 2;
+#endif
 
     apps_startup();
 
@@ -178,12 +179,14 @@
             pubin = 2;
         else if (strcmp(*argv, "-RSAPublicKey_out") == 0)
             pubout = 2;
+#ifndef OPENSSL_NO_RC4
         else if (strcmp(*argv, "-pvk-strong") == 0)
             pvk_encr = 2;
         else if (strcmp(*argv, "-pvk-weak") == 0)
             pvk_encr = 1;
         else if (strcmp(*argv, "-pvk-none") == 0)
             pvk_encr = 0;
+#endif
         else if (strcmp(*argv, "-noout") == 0)
             noout = 1;
         else if (strcmp(*argv, "-text") == 0)