free null cleanup finale

Don't check for NULL before calling OPENSSL_free

Reviewed-by: Richard Levitte <levitte@openssl.org>

apps/pkeyutl.c

diff --git a/apps/pkeyutl.c b/apps/pkeyutl.c
index 3afe0eb..87e4950 100644
--- a/apps/pkeyutl.c
+++ b/apps/pkeyutl.c
@@ -322,12 +322,9 @@
     EVP_PKEY_CTX_free(ctx);
     BIO_free(in);
     BIO_free_all(out);
-    if (buf_in)
-        OPENSSL_free(buf_in);
-    if (buf_out)
-        OPENSSL_free(buf_out);
-    if (sig)
-        OPENSSL_free(sig);
+    OPENSSL_free(buf_in);
+    OPENSSL_free(buf_out);
+    OPENSSL_free(sig);
     return ret;
 }
 
@@ -413,10 +410,7 @@
     }
 
  end:
-
-    if (passin)
-        OPENSSL_free(passin);
-
+    OPENSSL_free(passin);
     return ctx;
 
 }