[PECOFF] Fixed a bug which caused DataDirectoryChunk to write to a wrong offset in the file buffer

Patch by Ron Ofir.

llvm-svn: 187219

Author: rui314

lld/lib/ReaderWriter/PECOFF/WriterPECOFF.cpp

@@ -388,7 +388,6 @@ class DataDirectoryChunk : public AtomChunk {
   }
 
   virtual void write(uint8_t *fileBuffer) {
-    fileBuffer += fileOffset();
     for (const AtomLayout *layout : _atomLayouts) {
       if (!layout)
         continue;