Clean up hunspell CheckSpelling

Author: maxbrunsfeld

src/spellchecker_hunspell.cc

@@ -60,25 +60,23 @@ std::vector<MisspelledRange> HunspellSpellchecker::CheckSpelling(const uint16_t
   std::vector<char> utf8_buffer(256);
   char *utf8_word = utf8_buffer.data();
 
-  bool within_word = false;
   size_t word_start = 0;
-  for (size_t i = 0; i <= utf16_length; i++) {
-    bool is_alpha = i < utf16_length && std::iswalpha(utf16_text[i]);
-
+  bool within_word = false;
+  for (size_t i = 0; i < utf16_length; i++) {
+    bool is_word_character = iswalpha(utf16_text[i]);
     if (within_word) {
-      if (!is_alpha) {
+      if (!is_word_character) {
         within_word = false;
         const w_char *utf16_word = reinterpret_cast<const w_char *>(utf16_text + word_start);
         u16_u8(utf8_word, utf8_buffer.size(), utf16_word, i - word_start);
-
         if (hunspell->spell(utf8_word) == 0) {
           MisspelledRange range;
           range.start = word_start;
           range.end = i;
           result.push_back(range);
         }
       }
-    } else if (is_alpha) {
+    } else if (is_word_character) {
       word_start = i;
       within_word = true;
     }