Full reporting for benchmark; save robustness factor

lib/allocator/AlignedAllocator.h

@@ -204,10 +204,12 @@ public:
 #endif
     size_type bytes = __n*sizeof(_Tp);
     uint8_t *cp = (uint8_t *)ptr;
+    if ( ptr ) { 
     // One touch per 4k page, static OMP loop to catch same loop order
 #pragma omp parallel for schedule(static)
-    for(size_type n=0;n<bytes;n+=4096){
-      cp[n]=0;
+      for(size_type n=0;n<bytes;n+=4096){
+	cp[n]=0;
+      }
     }
     return ptr;
   }