More std::string_view fixes

include/boost/beast/http/detail/basic_parser.hpp

@@ -179,7 +179,7 @@ struct basic_parser_base
     BOOST_BEAST_DECL
     static
     bool
-    parse_dec(char const* it, char const* last, std::uint64_t& v);
+    parse_dec(string_view s, std::uint64_t& v);
 
     BOOST_BEAST_DECL
     static

include/boost/beast/http/detail/basic_parser.ipp

@@ -154,8 +154,12 @@ find_eol(
 
 bool
 basic_parser_base::
-parse_dec(char const* it, char const* last, std::uint64_t& v)
+parse_dec(
+    string_view s,
+    std::uint64_t& v)
 {
+    char const* it = s.data();
+    char const* last = it + s.size();
     if(it == last)
         return false;
     std::uint64_t tmp = 0;

include/boost/beast/http/impl/basic_parser.ipp

@@ -799,8 +799,7 @@ do_field(field f,
         }
 
         std::uint64_t v;
-        if(! parse_dec(
-            value.begin(), value.end(), v))
+        if(! parse_dec(value, v))
         {
             ec = error::bad_content_length;
             return;