Merge #12275 from erw7/profile-fix-use-after-free

viml/profile: fix missing fixes when merging vim-patch:8.1.0130

Fix #12255

### Steps to reproduce using `nvim -u NORC`

```
nvim -u NORC
:function Test()
:endfunction
:profile start log1
:profile func Test
:call Test()
:profile stop
:profile start log2
:profile func Test
:call Test()
:profile stop
```

### Actual behaviour

#### log1
```
FUNCTION Test()
Called 1 times
...
```

#### log2
```
FUNCTION Test()
Called 2 times
...
```

### Expected behaviour

#### log1
```
FUNCTION Test()
Called 1 times
...
```

#### log2
```
FUNCTION Test()
Called 1 times
...
```

1 files changed, 5 insertions, 4 deletions

diff --git a/src/nvim/ex_cmds2.c b/src/nvim/ex_cmds2.c
index fbdd64e43e..9f4055af8d 100644
--- a/src/nvim/ex_cmds2.c
+++ b/src/nvim/ex_cmds2.c
@@ -1038,16 +1038,17 @@ static void profile_reset(void)
     if (!HASHITEM_EMPTY(hi)) {
       n--;
       ufunc_T *uf = HI2UF(hi);
-      if (uf->uf_profiling) {
+      if (uf->uf_prof_initialized) {
         uf->uf_profiling    = 0;
         uf->uf_tm_count     = 0;
         uf->uf_tm_total     = profile_zero();
         uf->uf_tm_self      = profile_zero();
         uf->uf_tm_children  = profile_zero();
 
-        XFREE_CLEAR(uf->uf_tml_count);
-        XFREE_CLEAR(uf->uf_tml_total);
-        XFREE_CLEAR(uf->uf_tml_self);
+        for (int i = 0; i < uf->uf_lines.ga_len; i++) {
+          uf->uf_tml_count[i] = 0;
+          uf->uf_tml_total[i] = uf->uf_tml_self[i] = 0;
+        }
 
         uf->uf_tml_start    = profile_zero();
         uf->uf_tml_children = profile_zero();