Remove unnecessary and unused data member.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@140786 91177308-0d34-0410-b5e6-96231b3b80d8
diff --git a/tools/llvm-cov/GCOVReader.cpp b/tools/llvm-cov/GCOVReader.cpp
index cf01078..e4570b1 100644
--- a/tools/llvm-cov/GCOVReader.cpp
+++ b/tools/llvm-cov/GCOVReader.cpp
@@ -29,7 +29,7 @@
 
 /// read - Read GCOV buffer.
 bool GCOVFile::read(GCOVBuffer &Buffer) {
-  Format = Buffer.readGCOVFormat();
+  GCOVFormat Format = Buffer.readGCOVFormat();
   if (Format == InvalidGCOV)
     return false;