Fix simpledynamic test compilation when condigured without DSO support.
Fix simpledynamic test compilation when condigured without DSO support.

This fixes this compilation error:
In file included from test/simpledynamic.c:13:
test/simpledynamic.h:39:35: error: unknown type name 'SD'
   39 | int sd_load(const char *filename, SD *sd, int type);
      |                                   ^~
test/simpledynamic.h:40:12: error: unknown type name 'SD'
   40 | int sd_sym(SD sd, const char *symname, SD_SYM *sym);
      |            ^~
test/simpledynamic.h:40:40: error: unknown type name 'SD_SYM'
   40 | int sd_sym(SD sd, const char *symname, SD_SYM *sym);
      |                                        ^~~~~~
test/simpledynamic.h:41:14: error: unknown type name 'SD'
   41 | int sd_close(SD lib);
      |              ^~
make[1]: *** [Makefile:24670: test/moduleloadtest-bin-simpledynamic.o] Error 1
make[1]: *** Waiting for unfinished jobs....
In file included from test/moduleloadtest.c:19:
test/simpledynamic.h:39:35: error: unknown type name 'SD'
   39 | int sd_load(const char *filename, SD *sd, int type);
      |                                   ^~
test/simpledynamic.h:40:12: error: unknown type name 'SD'
   40 | int sd_sym(SD sd, const char *symname, SD_SYM *sym);
      |            ^~
test/simpledynamic.h:40:40: error: unknown type name 'SD_SYM'
   40 | int sd_sym(SD sd, const char *symname, SD_SYM *sym);
      |                                        ^~~~~~
test/simpledynamic.h:41:14: error: unknown type name 'SD'
   41 | int sd_close(SD lib);
      |              ^~

Reviewed-by: Tomas Mraz <973cc78d8b4cb00714230ba9be0225e917ab4ac6@fedoraproject.org>
Reviewed-by: Matt Caswell <1fa2ef4755a9226cb9a0a4840bd89b158ac71391@openssl.org>
(Merged from https://github.com/openssl/openssl/pull/13802)

openssl/openssl,openssl/openssl,openssl/openssl,openssl/openssl,openssl/openssl,openssl/openssl