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/CPack/IFW/cmCPackIFWGenerator.cxx b/Source/CPack/IFW/cmCPackIFWGenerator.cxx
index cf8334a..180c92e 100644
--- a/Source/CPack/IFW/cmCPackIFWGenerator.cxx
+++ b/Source/CPack/IFW/cmCPackIFWGenerator.cxx
@@ -90,7 +90,7 @@ int cmCPackIFWGenerator::PackageFiles()
       ifwCmd.c_str(), &output, &output, &retVal, nullptr,
       this->GeneratorVerbose, cmDuration::zero());
     if (!res || retVal) {
-      cmGeneratedFileStream ofs(ifwTmpFile.c_str());
+      cmGeneratedFileStream ofs(ifwTmpFile);
       ofs << "# Run command: " << ifwCmd << std::endl
           << "# Output:" << std::endl
           << output << std::endl;
@@ -203,7 +203,7 @@ int cmCPackIFWGenerator::PackageFiles()
       ifwCmd.c_str(), &output, &output, &retVal, nullptr,
       this->GeneratorVerbose, cmDuration::zero());
     if (!res || retVal) {
-      cmGeneratedFileStream ofs(ifwTmpFile.c_str());
+      cmGeneratedFileStream ofs(ifwTmpFile);
       ofs << "# Run command: " << ifwCmd << std::endl
           << "# Output:" << std::endl
           << output << std::endl;