Pass on BIO_CTRL_FLUSH.

Submitted by: Arne Ansper <arne@ats.cyber.ee>

CHANGES

@@ -5,6 +5,9 @@
 
  Changes between 0.9.1c and 0.9.2
 
+  *) BIO_f_buffer() didn't pass on BIO_CTRL_FLUSH.
+     [Arne Ansper <arne@ats.cyber.ee>]
+
   *) Make sure the already existing X509_STORE->depth variable is initialized
      in X509_STORE_new(), but document the fact that this variable is still
      unused in the certificate verification process.

crypto/bio/bf_buff.c

@@ -432,6 +432,7 @@ fprintf(stderr,"FLUSH [%3d] %3d -> %3d\n",ctx->obuf_off,ctx->obuf_len-ctx->obuf_
 				break;
 				}
 			}
+		ret=BIO_ctrl(b->next_bio,cmd,num,ptr);
 		break;
 	case BIO_CTRL_DUP:
 		dbio=(BIO *)ptr;