cmGeneratedFileStream: clang-tidy applied to remove redundant ``c_str`` calls

After changing the ``cmGeneratedFileStream`` methods to accept
``std::string const&`` instead of ``const char*`` we don't
need to call ``std::string::c_str`` anymore when passing
a ``std::string`` to a ``cmGeneratedFileStream`` method.

This patch removes all redundant ``std::string::c_str``
calls when passing a string to a ``cmGeneratedFileStream`` method.

It was generated by building CMake with clang-tidy enabled using
the following options:

-DCMAKE_CXX_CLANG_TIDY=/usr/bin/clang-tidy-4.0;-checks=-*,readability-redundant-string-cstr;-fix;-fix-errors

1 files changed, 1 insertions, 1 deletions

diff --git a/Source/CTest/cmCTestStartCommand.cxx b/Source/CTest/cmCTestStartCommand.cxx
index 3911540..47006c1 100644
--- a/Source/CTest/cmCTestStartCommand.cxx
+++ b/Source/CTest/cmCTestStartCommand.cxx
@@ -121,7 +121,7 @@ bool cmCTestStartCommand::InitialPass(std::vector<std::string> const& args,
 
   // Log startup actions.
   std::string startLogFile = binaryDir + "/Testing/Temporary/LastStart.log";
-  cmGeneratedFileStream ofs(startLogFile.c_str());
+  cmGeneratedFileStream ofs(startLogFile);
   if (!ofs) {
     cmCTestLog(this->CTest, ERROR_MESSAGE,
                "Cannot create log file: LastStart.log" << std::endl);