Merge branch 'jk/tighten-alloc' into maint

Small code and comment clean-up.

* jk/tighten-alloc:
  receive-pack: use FLEX_ALLOC_MEM in queue_command()
  correct FLEXPTR_* example in comment

Author: gitster

builtin/receive-pack.c

@@ -1375,11 +1375,9 @@ static struct command **queue_command(struct command **tail,
 
 	refname = line + 82;
 	reflen = linelen - 82;
-	cmd = xcalloc(1, st_add3(sizeof(struct command), reflen, 1));
+	FLEX_ALLOC_MEM(cmd, ref_name, refname, reflen);
 	hashcpy(cmd->old_sha1, old_sha1);
 	hashcpy(cmd->new_sha1, new_sha1);
-	memcpy(cmd->ref_name, refname, reflen);
-	cmd->ref_name[reflen] = '\0';
 	*tail = cmd;
 	return &cmd->next;
 }

git-compat-util.h

@@ -802,7 +802,7 @@ extern FILE *fopen_for_writing(const char *path);
  * you can do:
  *
  *   struct foo *f;
- *   FLEX_ALLOC_STR(f, name, src);
+ *   FLEXPTR_ALLOC_STR(f, name, src);
  *
  * and "name" will point to a block of memory after the struct, which will be
  * freed along with the struct (but the pointer can be repointed anywhere).