apps/blestress - change pattern data offset to 0
in stress_fill_mbuf_with_pattern() filling mbuf should begin at start of
pattern buffer, as the full length of that buffer if being copied
diff --git a/apps/blestress/src/stress.c b/apps/blestress/src/stress.c
index 0bed576..1bdbafa 100644
--- a/apps/blestress/src/stress.c
+++ b/apps/blestress/src/stress.c
@@ -121,7 +121,7 @@
     rest = len % STRESS_PAT_LEN;
 
     for (i = 0; i < mul; ++i) {
-        rc = os_mbuf_append(om, &test_6_pattern[29], STRESS_PAT_LEN);
+        rc = os_mbuf_append(om, &test_6_pattern[0], STRESS_PAT_LEN);
 
         if (rc) {
             os_mbuf_free_chain(om);
@@ -129,7 +129,7 @@
         }
     }
 
-    rc = os_mbuf_append(om, &test_6_pattern[29], rest);
+    rc = os_mbuf_append(om, &test_6_pattern[0], rest);
 
     if (rc) {
         os_mbuf_free_chain(om);