Fix two possible leaks.

Signed-off-by: Kurt Roeckx <kurt@roeckx.be>
Reviewed-by: Rich Salz <rsalz@openssl.org>

GH: #580

crypto/dso/dso_lib.c

diff --git a/crypto/dso/dso_lib.c b/crypto/dso/dso_lib.c
index cc29ca4..dfa738a 100644
--- a/crypto/dso/dso_lib.c
+++ b/crypto/dso/dso_lib.c
@@ -122,6 +122,7 @@
         ret->meth = meth;
     ret->references = 1;
     if ((ret->meth->init != NULL) && !ret->meth->init(ret)) {
+        sk_void_free(ret->meth_data);
         OPENSSL_free(ret);
         ret = NULL;
     }

crypto/engine/eng_dyn.c

diff --git a/crypto/engine/eng_dyn.c b/crypto/engine/eng_dyn.c
index d19cab2..bdd0a1a 100644
--- a/crypto/engine/eng_dyn.c
+++ b/crypto/engine/eng_dyn.c
@@ -231,6 +231,8 @@
      * If we lost the race to set the context, c is non-NULL and *ctx is the
      * context of the thread that won.
      */
+    if (c)
+        sk_OPENSSL_STRING_free(c->dirs);
     OPENSSL_free(c);
     return 1;
 }