BaseTools/VfrCompile: Fix potential memory leak

Cc: Liming Gao <liming.gao@intel.com>
Cc: Yonghong Zhu <yonghong.zhu@intel.com>
Cc: Eric Dong <eric.dong@intel.com>
Cc: Dandan Bi <dandan.bi@intel.com>
Contributed-under: TianoCore Contribution Agreement 1.0
Signed-off-by: Hao Wu <hao.a.wu@intel.com>
Reviewed-by: Liming Gao <liming.gao@intel.com>
diff --git a/BaseTools/Source/C/VfrCompile/VfrFormPkg.cpp b/BaseTools/Source/C/VfrCompile/VfrFormPkg.cpp
index d06c1bc..ec73529 100644
--- a/BaseTools/Source/C/VfrCompile/VfrFormPkg.cpp
+++ b/BaseTools/Source/C/VfrCompile/VfrFormPkg.cpp
@@ -113,6 +113,7 @@
   }

   BufferStart = new CHAR8[BufferSize];

   if (BufferStart == NULL) {

+    delete Node;

     return;

   }

   BufferEnd   = BufferStart + BufferSize;