[llvm-cov] Fix a lifetime issue

This fixes an issue where a std::string was moved to a constructor
which accepted a StringRef.

llvm-svn: 312816
diff --git a/llvm/tools/llvm-cov/CoverageSummaryInfo.cpp b/llvm/tools/llvm-cov/CoverageSummaryInfo.cpp
index 9c0027b..350c7a6 100644
--- a/llvm/tools/llvm-cov/CoverageSummaryInfo.cpp
+++ b/llvm/tools/llvm-cov/CoverageSummaryInfo.cpp
@@ -82,7 +82,7 @@
        << Group.getColumn();
   }
 
-  FunctionCoverageSummary Summary(std::move(Name));
+  FunctionCoverageSummary Summary(Name);
   Summary.ExecutionCount = Group.getTotalExecutionCount();
   Summary.RegionCoverage = Summaries[0].RegionCoverage;
   Summary.LineCoverage = Summaries[0].LineCoverage;