cid#1202755 Clarify with assert that new_size == 0 cannot happen

...so arena->m_hash_shfit will never be negative and never cause undefined shift by negative
value.

Change-Id: Ifc3d28d53bae38bc8deea72473c81f1d043dc18e

1 files changed, 2 insertions, 0 deletions

diff --git a/sal/rtl/alloc_arena.cxx b/sal/rtl/alloc_arena.cxx
index f28cdc140d49..1ed149752e17 100644
--- a/sal/rtl/alloc_arena.cxx
+++ b/sal/rtl/alloc_arena.cxx
@@ -268,6 +268,8 @@ rtl_arena_hash_rescale (
     sal_Size         new_size
 )
 {
+    assert(new_size != 0);
+
     rtl_arena_segment_type ** new_table;
     sal_Size                  new_bytes;