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, 2 insertions, 2 deletions

diff --git a/Source/CTest/cmCTestScriptHandler.cxx b/Source/CTest/cmCTestScriptHandler.cxx
index 333c899..6b62bb4 100644
--- a/Source/CTest/cmCTestScriptHandler.cxx
+++ b/Source/CTest/cmCTestScriptHandler.cxx
@@ -792,7 +792,7 @@ int cmCTestScriptHandler::RunConfigurationDashboard()
       cmCTestLog(this->CTest, HANDLER_VERBOSE_OUTPUT,
                  "Write CMake output to file: " << cmakeOutputFile
                                                 << std::endl);
-      cmGeneratedFileStream fout(cmakeOutputFile.c_str());
+      cmGeneratedFileStream fout(cmakeOutputFile);
       if (fout) {
         fout << output.c_str();
       } else {
@@ -856,7 +856,7 @@ bool cmCTestScriptHandler::WriteInitialCache(const char* directory,
 {
   std::string cacheFile = directory;
   cacheFile += "/CMakeCache.txt";
-  cmGeneratedFileStream fout(cacheFile.c_str());
+  cmGeneratedFileStream fout(cacheFile);
   if (!fout) {
     return false;
   }