Fix memory-leak in evp_test.

Change-Id: Ibdaeeaa45dbdb31921ae7e99a4eb3708f99ccaa9
Reviewed-on: https://boringssl-review.googlesource.com/3301
Reviewed-by: Adam Langley <agl@google.com>
diff --git a/crypto/evp/evp_test.c b/crypto/evp/evp_test.c
index 3e74cd5..12ce642 100644
--- a/crypto/evp/evp_test.c
+++ b/crypto/evp/evp_test.c
@@ -518,6 +518,9 @@
   if (pkey) {
     EVP_PKEY_free(pkey);
   }
+  if (algor != NULL) {
+    X509_ALGOR_free(algor);
+  }
 
   return ret;
 }