STYLE: Use default member initialization

Converts a default constructor’s member initializers into the new
default member initializers in C++11. Other member initializers that match the
default member initializer are removed. This can reduce repeated code or allow
use of ‘= default’.

SRCDIR=/Users/johnsonhj/src/jsoncpp/ #My local SRC
BLDDIR=/Users/johnsonhj/src/jsoncpp/cmake-build-debug/ #My local BLD

cd /Users/johnsonhj/src/jsoncpp/cmake-build-debug/
run-clang-tidy.py -extra-arg=-D__clang__ -checks=-*,modernize-use-default-member-init  -header-filter=.* -fix
diff --git a/include/json/reader.h b/include/json/reader.h
index 58cb58b..1af5cb0 100644
--- a/include/json/reader.h
+++ b/include/json/reader.h
@@ -242,14 +242,14 @@
   Nodes nodes_;
   Errors errors_;
   JSONCPP_STRING document_;
-  Location begin_;
-  Location end_;
-  Location current_;
-  Location lastValueEnd_;
-  Value* lastValue_;
+  Location begin_{};
+  Location end_{};
+  Location current_{};
+  Location lastValueEnd_{};
+  Value* lastValue_{};
   JSONCPP_STRING commentsBefore_;
   Features features_;
-  bool collectComments_;
+  bool collectComments_{};
 }; // Reader
 
 /** Interface for reading JSON from a char array.