free null cleanup finale

Don't check for NULL before calling OPENSSL_free

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

crypto/dso/dso_lib.c

diff --git a/crypto/dso/dso_lib.c b/crypto/dso/dso_lib.c
index c1d6d25..a33a8a8 100644
--- a/crypto/dso/dso_lib.c
+++ b/crypto/dso/dso_lib.c
@@ -162,11 +162,8 @@
     }
 
     sk_void_free(dso->meth_data);
-    if (dso->filename != NULL)
-        OPENSSL_free(dso->filename);
-    if (dso->loaded_filename != NULL)
-        OPENSSL_free(dso->loaded_filename);
-
+    OPENSSL_free(dso->filename);
+    OPENSSL_free(dso->loaded_filename);
     OPENSSL_free(dso);
     return (1);
 }
@@ -360,8 +357,7 @@
         return (0);
     }
     BUF_strlcpy(copied, filename, strlen(filename) + 1);
-    if (dso->filename)
-        OPENSSL_free(dso->filename);
+    OPENSSL_free(dso->filename);
     dso->filename = copied;
     return (1);
 }