Revert "Always close profiler output file."

This reverts commit bcb7df8.

Author: ligurio

src/jit/p.lua

@@ -228,7 +228,9 @@ local function prof_finish()
     local samples = prof_samples
     if samples == 0 then
       if prof_raw ~= true then out:write("[No samples collected]\n") end
-    elseif prof_ann then
+      return
+    end
+    if prof_ann then
       prof_annotate(prof_count1, samples)
     else
       prof_top(prof_count1, prof_count2, samples, "")