Fix 'scope of phdr can be reduced' cppcheck error in free_block_ending_at

(fix of commit 9245e1154)

Issue #324 (bdwgc).

* allchblk.c (GC_free_block_ending_at): Declare phdr local variable
only if p is non-null.

1 files changed, 2 insertions, 2 deletions

diff --git a/allchblk.c b/allchblk.c
index d96d3a8a..282089cd 100644
--- a/allchblk.c
+++ b/allchblk.c
@@ -354,10 +354,10 @@ static struct hblk * get_block_ending_at(struct hblk *h)
 STATIC struct hblk * GC_free_block_ending_at(struct hblk *h)
 {
     struct hblk * p = get_block_ending_at(h);
-    hdr * phdr;
 
     if (p /* != NULL */) { /* CPPCHECK */
-      phdr = HDR(p);
+      hdr * phdr = HDR(p);
+
       if (HBLK_IS_FREE(phdr)) {
         return p;
       }