Adopt ..= range syntax in html5ever

This is starts to become a warning in rustc 1.37.0

Author: est31

html5ever/src/tokenizer/char_ref/mod.rs

@@ -244,14 +244,14 @@ impl CharRefTokenizer {
 
         let (c, error) = match self.num {
             n if (n > 0x10FFFF) || self.num_too_big => ('\u{fffd}', true),
-            0x00 | 0xD800...0xDFFF => ('\u{fffd}', true),
+            0x00 | 0xD800..=0xDFFF => ('\u{fffd}', true),
 
-            0x80...0x9F => match data::C1_REPLACEMENTS[(self.num - 0x80) as usize] {
+            0x80..=0x9F => match data::C1_REPLACEMENTS[(self.num - 0x80) as usize] {
                 Some(c) => (c, true),
                 None => (conv(self.num), true),
             },
 
-            0x01...0x08 | 0x0B | 0x0D...0x1F | 0x7F | 0xFDD0...0xFDEF => (conv(self.num), true),
+            0x01..=0x08 | 0x0B | 0x0D..=0x1F | 0x7F | 0xFDD0..=0xFDEF => (conv(self.num), true),
 
             n if (n & 0xFFFE) == 0xFFFE => (conv(n), true),
 

html5ever/src/tokenizer/mod.rs

@@ -264,7 +264,7 @@ impl<Sink: TokenSink> Tokenizer<Sink> {
 
         if self.opts.exact_errors &&
             match c as u32 {
-                0x01...0x08 | 0x0B | 0x0E...0x1F | 0x7F...0x9F | 0xFDD0...0xFDEF => true,
+                0x01..=0x08 | 0x0B | 0x0E..=0x1F | 0x7F..=0x9F | 0xFDD0..=0xFDEF => true,
                 n if (n & 0xFFFE) == 0xFFFE => true,
                 _ => false,
             }

html5ever/src/util/str.rs

@@ -19,15 +19,15 @@ pub fn to_escaped_string<T: fmt::Debug>(x: &T) -> String {
 /// letter, otherwise None.
 pub fn lower_ascii_letter(c: char) -> Option<char> {
     match c {
-        'a'...'z' => Some(c),
-        'A'...'Z' => Some((c as u8 - b'A' + b'a') as char),
+        'a'..='z' => Some(c),
+        'A'..='Z' => Some((c as u8 - b'A' + b'a') as char),
         _ => None,
     }
 }
 
 /// Is the character an ASCII alphanumeric character?
 pub fn is_ascii_alnum(c: char) -> bool {
-    matches!(c, '0'...'9' | 'a'...'z' | 'A'...'Z')
+    matches!(c, '0'..='9' | 'a'..='z' | 'A'..='Z')
 }
 
 /// ASCII whitespace characters, as defined by