make sure stdio.h can be swtiched off if not available

wolfssl/ssl.h

@@ -38,8 +38,6 @@
         #else
             #include <nio.h>
         #endif
-    #else
-        #include <stdio.h>   /* ERR_printf */
     #endif
 #endif
 
@@ -681,6 +679,7 @@ enum {
 #if !defined(NO_FILESYSTEM) && !defined(NO_STDIO_FILESYSTEM)
 /* wolfSSL extension, provide last error from SSL_get_error
    since not using thread storage error queue */
+#include <stdio.h>
 WOLFSSL_API void  wolfSSL_ERR_print_errors_fp(FILE*, int err);
 #endif
 

wolfssl/wolfcrypt/wc_port.h

@@ -224,9 +224,9 @@ WOLFSSL_API int wolfCrypt_Init(void);
     #define XBADFILE   NULL
 #else
     /* stdio, default case */
+    #include <stdio.h>
     #define XFILE      FILE*
     #if defined(WOLFSSL_MDK_ARM)
-        #include <stdio.h>
         extern FILE * wolfSSL_fopen(const char *name, const char *mode) ;
         #define XFOPEN     wolfSSL_fopen
     #else