Revert "Alt tree-sitter#2454"

Author: ahlinc

cli/src/generate/render.rs

@@ -766,6 +766,7 @@ impl Generator {
         indent!(self);
 
         add_line!(self, "START_LEXER();");
+        add_line!(self, "eof = lexer->eof(lexer);");
         add_line!(self, "switch (state) {{");
 
         indent!(self);

lib/include/tree_sitter/parser.h

@@ -129,18 +129,24 @@ struct TSLanguage {
  *  Lexer Macros
  */
 
+#ifdef _MSC_VER
+#define UNUSED __pragma(warning(suppress : 4101))
+#else
+#define UNUSED __attribute__((unused))
+#endif
+
 #define START_LEXER()           \
   bool result = false;          \
   bool skip = false;            \
+  UNUSED                        \
   bool eof = false;             \
   int32_t lookahead;            \
   goto start;                   \
   next_state:                   \
   lexer->advance(lexer, skip);  \
   start:                        \
   skip = false;                 \
-  lookahead = lexer->lookahead; \
-  eof = lexer->eof(lexer);
+  lookahead = lexer->lookahead;
 
 #define ADVANCE(state_value) \
   {                          \