fixes #22883; replace `default(typeof(` with `reset`; suppress `Unsaf… (#22895)

fixes #22883

…eDefault` warnings

avoid issues mentioned by https://forum.nim-lang.org namely, it
allocated unnecessary stack objects in the loop

```c
while (1)
{
tyObject_N__8DSNqSGSHBKOhI8CqSgAow T5_;
nimZeroMem((void *)(&T5_), sizeof(tyObject_N__8DSNqSGSHBKOhI8CqSgAow));
eqsink___test4954_u450((&(*t_p0).data.p->data[i].Field1), T5_);
}
```

It might be more efficient in some cases

follow up https://github.com/nim-lang/Nim/pull/21821

1 files changed, 4 insertions, 4 deletions

diff --git a/lib/pure/collections/tableimpl.nim b/lib/pure/collections/tableimpl.nim
index 112aaa7d0..9bccc8d96 100644
--- a/lib/pure/collections/tableimpl.nim
+++ b/lib/pure/collections/tableimpl.nim
@@ -119,8 +119,8 @@ template delImplIdx(t, i, makeEmpty, cellEmpty, cellHash) =
         var j = i         # The correctness of this depends on (h+1) in nextTry
         var r = j         # though may be adaptable to other simple sequences.
         makeEmpty(i)                     # mark current EMPTY
-        t.data[i].key = default(typeof(t.data[i].key))
-        t.data[i].val = default(typeof(t.data[i].val))
+        reset(t.data[i].key)
+        reset(t.data[i].val)
         while true:
           i = (i + 1) and msk            # increment mod table size
           if cellEmpty(i):               # end of collision cluster; So all done
@@ -151,8 +151,8 @@ template clearImpl() {.dirty.} =
   for i in 0 ..< t.dataLen:
     when compiles(t.data[i].hcode): # CountTable records don't contain a hcode
       t.data[i].hcode = 0
-    t.data[i].key = default(typeof(t.data[i].key))
-    t.data[i].val = default(typeof(t.data[i].val))
+    reset(t.data[i].key)
+    reset(t.data[i].val)
   t.counter = 0
 
 template ctAnd(a, b): bool =