Update Clang Tidy to report unused return values

Signed-off-by: Michael Jackson <mike.jackson@bluequartz.net>

Author: imikejackson

.clang-tidy

@@ -1,4 +1,4 @@
-Checks:          '-*,modernize-use-nullptr,modernize-deprecated-headers,modernize-shrink-to-fit,modernize-use-bool-literals,modernize-use-default-member-init,modernize-use-equals-default,modernize-use-equals-delete,modernize-use-override,modernize-use-equals-default,readability-avoid-const-params-in-decls,readability-braces-around-statements,readability-container-size-empty,readability-delete-null-pointer,readability-else-after-return,readability-implicit-bool-conversion,readability-redundant-control-flow,readability-redundant-declaration,readability-redundant-function-ptr-dereference,readability-redundant-member-init,readability-redundant-smartptr-get,readability-redundant-string-cstr,readability-redundant-string-init,readability-simplify-boolean-expr,readability-simplify-subscript-expr,readability-static-accessed-through-instance,readability-static-definition-in-anonymous-namespace,readability-string-compare'
+Checks:          '-*,modernize-use-nullptr,modernize-deprecated-headers,modernize-shrink-to-fit,modernize-use-bool-literals,modernize-use-default-member-init,modernize-use-equals-default,modernize-use-equals-delete,modernize-use-override,modernize-use-equals-default,readability-avoid-const-params-in-decls,readability-braces-around-statements,readability-container-size-empty,readability-delete-null-pointer,readability-else-after-return,readability-implicit-bool-conversion,readability-redundant-control-flow,readability-redundant-declaration,readability-redundant-function-ptr-dereference,readability-redundant-member-init,readability-redundant-smartptr-get,readability-redundant-string-cstr,readability-redundant-string-init,readability-simplify-boolean-expr,readability-simplify-subscript-expr,readability-static-accessed-through-instance,readability-static-definition-in-anonymous-namespace,readability-string-compare,bugprone-unused-return-value'
 WarningsAsErrors: ''
 HeaderFilterRegex: ''
 AnalyzeTemporaryDtors: false