clang-tidy: fix readability-redundant-string-init warnings

.clang-tidy

@@ -26,7 +26,6 @@ readability-*,\
 -readability-magic-numbers,\
 -readability-named-parameter,\
 -readability-redundant-declaration,\
--readability-redundant-string-init,\
 -readability-simplify-boolean-expr,\
 -readability-uppercase-literal-suffix,\
 -readability-use-anyofallof,\

Source/cmLocalNinjaGenerator.cxx

@@ -40,7 +40,6 @@
 cmLocalNinjaGenerator::cmLocalNinjaGenerator(cmGlobalGenerator* gg,
                                              cmMakefile* mf)
   : cmLocalCommonGenerator(gg, mf, mf->GetState()->GetBinaryDirectory())
-  , HomeRelativeOutputPath("")
 {
 }
 

Source/cmScriptGenerator.cxx

@@ -11,7 +11,6 @@ cmScriptGenerator::cmScriptGenerator(std::string config_var,
                                      std::vector<std::string> configurations)
   : RuntimeConfigVariable(std::move(config_var))
   , Configurations(std::move(configurations))
-  , ConfigurationName("")
   , ConfigurationTypes(nullptr)
   , ActionsPerConfig(false)
 {