asan: leak in bfd_section_from_shdr

[Alan Modra]

	* elf.c (bfd_section_from_shdr): Free sections_being_created.
	Use bfd_zmalloc.

diff --git a/bfd/elf.c b/bfd/elf.c
index 549f661b9d..3163d34e8d 100644
--- a/bfd/elf.c
+++ b/bfd/elf.c
@@ -2061,17 +2061,19 @@ bfd_section_from_shdr (bfd *abfd, unsigned int shindex)
 	 rather than being held in a static pointer.  */
 
       if (sections_being_created_abfd != abfd)
-	sections_being_created = NULL;
+	{
+	  free (sections_being_created);
+	  sections_being_created = NULL;
+	}
       if (sections_being_created == NULL)
 	{
 	  size_t amt = elf_numsections (abfd) * sizeof (bfd_boolean);
 
 	  /* PR 26005: Do not use bfd_zalloc here as the memory might
 	     be released before the bfd has been fully scanned.  */
-	  sections_being_created = (bfd_boolean *) bfd_malloc (amt);
+	  sections_being_created = (bfd_boolean *) bfd_zmalloc (amt);
 	  if (sections_being_created == NULL)
 	    return FALSE;
-	  memset (sections_being_created, FALSE, amt);
 	  sections_being_created_abfd = abfd;
 	}
       if (sections_being_created [shindex])

-- 
Alan Modra
Australia Development Lab, IBM