A couple memory profiler fixes

* Fix crash in mono_unity_type_get_name_foreach_name_chunk_recurse that was due to an upstream change that made null checking mono_generic_param_info's result no longer valid

* Bring fix made in unity-master forward in mono_mempool_foreach_block

Author: UnityAlex

mono/metadata/mempool.c

@@ -428,10 +428,9 @@ mono_mempool_foreach_block(MonoMemPool* pool, mono_mempool_block_proc callback,
 
 	while (current)
 	{
-		gpointer start = (guint8*)current + SIZEOF_MEM_POOL;
-		gpointer end = (guint8*)start + current->size;
+		gpointer end = (guint8*)current + current->size;
 
-		callback(start, end, user_data);
+		callback(current, end, user_data);
 		current = current->next;
 	}
 }

mono/metadata/unity-utils.c

@@ -1676,7 +1676,7 @@ mono_unity_type_get_name_foreach_name_chunk_recurse(MonoType *type, gboolean is_
 	}
 	case MONO_TYPE_VAR:
 	case MONO_TYPE_MVAR:
-		if (!mono_generic_param_info(type->data.generic_param)) {
+		if (!mono_generic_param_name(type->data.generic_param)) {
 
 			if (type->type == MONO_TYPE_VAR) {
 				*bufferIter++ = '!';
@@ -1688,7 +1688,7 @@ mono_unity_type_get_name_foreach_name_chunk_recurse(MonoType *type, gboolean is_
 			sprintf(bufferIter, "%d", type->data.generic_param->num);
 		}
 		else
-			nameChunkReport(mono_generic_param_info(type->data.generic_param)->name, userData);
+			nameChunkReport(mono_generic_param_name(type->data.generic_param), userData);
 
 		if (type->byref)
 			*bufferIter++ = '&';