Fix previous commit

Author: unak

lib/net/http/header.rb

@@ -21,10 +21,10 @@ def initialize_http_header(initheader)
         warn "net/http: nil HTTP header: #{key}", uplevel: 3 if $VERBOSE
       else
         value = value.strip # raise error for invalid byte sequences
-        if key.bytesize > MAX_KEY_LENGTH
+        if key.to_s.bytesize > MAX_KEY_LENGTH
           raise ArgumentError, "too long (#{key.bytesize} bytes) header: #{key[0, 30].inspect}..."
         end
-        if value.bytesize > MAX_FIELD_LENGTH
+        if value.to_s.bytesize > MAX_FIELD_LENGTH
           raise ArgumentError, "header #{key} has too long field vallue: #{value.bytesize}"
         end
         if value.count("\r\n") > 0

version.h

@@ -12,7 +12,7 @@
 # define RUBY_VERSION_MINOR RUBY_API_VERSION_MINOR
 #define RUBY_VERSION_TEENY 6
 #define RUBY_RELEASE_DATE RUBY_RELEASE_YEAR_STR"-"RUBY_RELEASE_MONTH_STR"-"RUBY_RELEASE_DAY_STR
-#define RUBY_PATCHLEVEL 215
+#define RUBY_PATCHLEVEL 216
 
 #define RUBY_RELEASE_YEAR 2023
 #define RUBY_RELEASE_MONTH 3