llvm-readobj: Fix an unused variable after r241764

llvm-svn: 241783
diff --git a/llvm/tools/llvm-readobj/COFFDumper.cpp b/llvm/tools/llvm-readobj/COFFDumper.cpp
index c6ff1c4d..ccb542e 100644
--- a/llvm/tools/llvm-readobj/COFFDumper.cpp
+++ b/llvm/tools/llvm-readobj/COFFDumper.cpp
@@ -597,8 +597,9 @@
       // in the line table.  The filename string is accessed using double
       // indirection to the string table subsection using the index subsection.
       uint32_t OffsetInIndex = DE.getU32(&Offset),
-               SegmentLength   = DE.getU32(&Offset),
-               FullSegmentSize = DE.getU32(&Offset);
+               SegmentLength = DE.getU32(&Offset);
+      Offset += sizeof(uint32_t); // Skip FullSegmentSize
+
       uint32_t FilenameOffset;
       {
         DataExtractor SDE(CVFileIndexToStringOffsetTable, true, 4);