Made formatting changes

gcc/rust/ChangeLog:

	* parse/rust-parse-impl.h (Parser::left_denotations): it will stop parsing when '=>' or ',' is encountered if restrictions.stop_on_token is on
	(Parser::null_denotation): Same as above stopping for the special tokens
	* parse/rust-parse.h (struct ParseRestrictions): Added a field of stop_on_token for executing above functionality.

gcc/rust/parse/rust-parse-impl.h

@@ -12084,7 +12084,8 @@ Parser<ManagedTokenSource>::left_denotations (std::unique_ptr<AST::Expr> expr,
     {
       lexer.skip_token ();
       if (restrictions.stop_on_token
-            && (current_token->get_id() == MATCH_ARROW || current_token->get_id() == COMMA))
+          && (current_token->get_id() == MATCH_ARROW 
+              || current_token->get_id() == COMMA))
         {
             rust_debug ("Stopping parsing at restricted token in left_denotations");
             return expr;
@@ -12127,7 +12128,8 @@ Parser<ManagedTokenSource>::null_denotation (const_TokenPtr tok,
   /* note: tok is previous character in input stream, not current one, as
    * parse_expr skips it before passing it in */
 
-  if (restrictions.stop_on_token && (tok->get_id() == MATCH_ARROW || tok->get_id() == COMMA))
+  if (restrictions.stop_on_token 
+      && (tok->get_id() == MATCH_ARROW || tok->get_id() == COMMA))
     {
         rust_debug("Stopping parsing at restricted token in null_denotation");
         return nullptr;

gcc/rust/parse/rust-parse.h

@@ -89,7 +89,8 @@ struct ParseRestrictions
   bool entered_from_unary = false;
   bool expr_can_be_null = false;
   bool expr_can_be_stmt = false;
-  bool stop_on_token = false; // This is for stopping parsing at a specific token
+  bool stop_on_token 
+    = false; // This is for stopping parsing at a specific token
   bool consume_semi = true;
   /* Macro invocations that are statements can expand without a semicolon after
    * the final statement, if it's an expression statement. */