Run mysql_client_test without --silent

Flush both stdout and stderr before abort'ing mysql_client_test

mysql-test/mysql-test-run.pl

@@ -1735,7 +1735,7 @@ sub environment_setup () {
   # Setup env so childs can execute mysql_client_test
   # ----------------------------------------------------
   my $cmdline_mysql_client_test=
-    "$exe_mysql_client_test --no-defaults --testcase --user=root --silent " .
+    "$exe_mysql_client_test --no-defaults --testcase --user=root " .
     "--port=$master->[0]->{'port'} " .
     "--socket=$master->[0]->{'path_sock'}";
   if ( $mysql_version_id >= 50000 )

tests/mysql_client_test.c

@@ -113,7 +113,9 @@ static void client_disconnect();
 
 void die(const char *file, int line, const char *expr)
 {
+  fflush(stdout);
   fprintf(stderr, "%s:%d: check failed: '%s'\n", file, line, expr);
+  fflush(stderr);
   abort();
 }