patch 8.1.1386: unessesary type casts for lalloc()

Problem:    Unessesary type casts for lalloc().
Solution:   Remove type casts.  Change lalloc(size, TRUE) to alloc(size).
diff --git a/src/edit.c b/src/edit.c
index 6e2fdb8..6e4b474 100644
--- a/src/edit.c
+++ b/src/edit.c
@@ -3859,7 +3859,7 @@
     if (replace_stack_len <= replace_stack_nr)
     {
 	replace_stack_len += 50;
-	p = lalloc(sizeof(char_u) * replace_stack_len, TRUE);
+	p = alloc(sizeof(char_u) * replace_stack_len);
 	if (p == NULL)	    /* out of memory */
 	{
 	    replace_stack_len -= 50;