Silence unused variable warning.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@68735 91177308-0d34-0410-b5e6-96231b3b80d8
diff --git a/lib/CodeGen/SelectionDAG/FastISel.cpp b/lib/CodeGen/SelectionDAG/FastISel.cpp
index e2d85f0..8467330 100644
--- a/lib/CodeGen/SelectionDAG/FastISel.cpp
+++ b/lib/CodeGen/SelectionDAG/FastISel.cpp
@@ -372,7 +372,7 @@
 
       // Record the source line.
       unsigned Line = Subprogram.getLineNumber();
-      unsigned LabelID = DW->RecordSourceLine(Line, 0, SrcFile);
+      DW->RecordSourceLine(Line, 0, SrcFile);
       setCurDebugLoc(DebugLoc::get(MF.getOrCreateDebugLocID(SrcFile, Line, 0)));
 
       // llvm.dbg.func_start also defines beginning of function scope.