From 599430e649cda76de1af2e57db784bfd2b6ced4d Mon Sep 17 00:00:00 2001
From: Bill Zissimopoulos <billziss@navimatics.com>
Date: Fri, 20 May 2016 18:17:00 -0700
Subject: [PATCH] memfs: fix erroneous realloc

---
 tst/memfs/memfs.cpp | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/tst/memfs/memfs.cpp b/tst/memfs/memfs.cpp
index 12d120c7..c43043f2 100644
--- a/tst/memfs/memfs.cpp
+++ b/tst/memfs/memfs.cpp
@@ -634,7 +634,7 @@ static NTSTATUS SetAllocationSize(FSP_FILE_SYSTEM *FileSystem,
             return STATUS_DISK_FULL;
 
         FileData = realloc(FileNode->FileData, (size_t)AllocationSize);
-        if (0 == FileData)
+        if (0 == FileData && 0 != AllocationSize)
             return STATUS_INSUFFICIENT_RESOURCES;
 
         FileNode->FileData = FileData;