Infinite loop in case of given address more then last LSN fixed.

storage/maria/ma_loghandler.c:
  Infinite loop in case of given address more then last LSN fixed
  (now it means just flush all log).
  Removed unneeded ASSERT.
storage/maria/unittest/ma_test_loghandler-t.c:
  The test case of flushing all log added.

storage/maria/ma_loghandler.c

@@ -6546,7 +6546,8 @@ my_bool translog_flush(LSN lsn)
     struct st_translog_buffer *buffer= log_descriptor.bc.buffer;
     /* we can't flush in future */
     DBUG_ASSERT(cmp_translog_addr(log_descriptor.horizon, lsn) >= 0);
-    if (cmp_translog_addr(log_descriptor.flushed, lsn) >= 0)
+    if (cmp_translog_addr(log_descriptor.flushed, lsn) >= 0 ||
+        full_circle)
     {
       DBUG_PRINT("info", ("already flushed: (%lu,0x%lx)",
                           LSN_IN_PARTS(log_descriptor.flushed)));

storage/maria/unittest/ma_test_loghandler-t.c

@@ -185,7 +185,7 @@ int main(int argc __attribute__((unused)), char *argv[])
   /* Suppressing of automatic record writing */
   trn->first_undo_lsn|= TRANSACTION_LOGGED_LONG_ID;
 
-  plan(((ITERATIONS - 1) * 4 + 1)*2 + ITERATIONS - 1);
+  plan(((ITERATIONS - 1) * 4 + 1)*2 + ITERATIONS - 1 + 1);
 
   srandom(122334817L);
 
@@ -335,6 +335,15 @@ int main(int argc __attribute__((unused)), char *argv[])
     ok(1, "flush");
   }
 
+  if (translog_flush(translog_get_horizon()))
+  {
+    fprintf(stderr, "Can't flush up to horizon\n", (ulong) i);
+    translog_destroy();
+    ok(0, "flush");
+    exit(1);
+  }
+  ok(1, "flush");
+
   srandom(122334817L);
 
   rc= 1;