Use modern member initialization

Author: joto

include/osmium/io/detail/input_format.hpp

@@ -77,7 +77,7 @@ namespace osmium {
                 queue_wrapper<std::string> m_input_queue;
                 osmium::osm_entity_bits::type m_read_which_entities;
                 osmium::io::read_meta m_read_metadata;
-                bool m_header_is_done;
+                bool m_header_is_done = false;
 
             protected:
 
@@ -130,8 +130,7 @@ namespace osmium {
                     m_header_promise(args.header_promise),
                     m_input_queue(args.input_queue),
                     m_read_which_entities(args.read_which_entities),
-                    m_read_metadata(args.read_metadata),
-                    m_header_is_done(false) {
+                    m_read_metadata(args.read_metadata) {
                 }
 
                 Parser(const Parser&) = delete;

include/osmium/osm/changeset.hpp

@@ -62,8 +62,8 @@ namespace osmium {
 
         osmium::Timestamp m_date;
         osmium::user_id_type m_uid = 0;
-        changeset_comment_size_type m_text_size;
-        string_size_type m_user_size;
+        changeset_comment_size_type m_text_size = 0;
+        string_size_type m_user_size = 0;
 
         unsigned char* endpos() {
             return data() + osmium::memory::padded_length(sizeof(ChangesetComment) + m_user_size + m_text_size);
@@ -98,9 +98,7 @@ namespace osmium {
 
         ChangesetComment(osmium::Timestamp date, osmium::user_id_type uid) noexcept :
             m_date(date),
-            m_uid(uid),
-            m_text_size(0),
-            m_user_size(0) {
+            m_uid(uid) {
         }
 
         ChangesetComment(const ChangesetComment&) = delete;