[PATCH] BaseTools: Fix build crash when fdf is empty file

[Yonghong Zhu <yonghong.zhu@intel.com>]

From: Yunhua Feng <yunhuax.feng@intel.com>

Fix build crash when fdf is empty file

Fix https://bugzilla.tianocore.org/show_bug.cgi?id=912

Cc: Liming Gao <liming.gao@intel.com>
Cc: Yonghong Zhu <yonghong.zhu@intel.com>
Contributed-under: TianoCore Contribution Agreement 1.1
Signed-off-by: Yunhua Feng <yunhuax.feng@intel.com>
---
 BaseTools/Source/Python/GenFds/FdfParser.py | 2 ++
 1 file changed, 2 insertions(+)

diff --git a/BaseTools/Source/Python/GenFds/FdfParser.py b/BaseTools/Source/Python/GenFds/FdfParser.py
index 4be790a819..ae6b10f1e3 100644
--- a/BaseTools/Source/Python/GenFds/FdfParser.py
+++ b/BaseTools/Source/Python/GenFds/FdfParser.py
@@ -421,10 +421,12 @@ class FdfParser:
     def __CurrentLine(self):
         return self.Profile.FileLinesList[self.CurrentLineNumber - 1]
 
     def __StringToList(self):
         self.Profile.FileLinesList = [list(s) for s in self.Profile.FileLinesList]
+        if not self.Profile.FileLinesList:
+            EdkLogger.error('FdfParser', FILE_READ_FAILURE, 'The file is empty!', File=self.FileName)
         self.Profile.FileLinesList[-1].append(' ')
 
     def __ReplaceFragment(self, StartPos, EndPos, Value = ' '):
         if StartPos[0] == EndPos[0]:
             Offset = StartPos[1]
-- 
2.12.2.windows.2