widl: Fix string format warning.

tools/widl/utils.c

@@ -66,18 +66,6 @@ static void generic_msg(const loc_info_t *loc_info, const char *s, const char *t
 }
 
 
-/* yyerror:  yacc assumes this is not newline terminated.  */
-void parser_error(const char *s, ...)
-{
-	loc_info_t cur_location = CURRENT_LOCATION;
-	va_list ap;
-	va_start(ap, s);
-	generic_msg(&cur_location, s, "Error", ap);
-	fprintf(stderr, "\n");
-	va_end(ap);
-	exit(1);
-}
-
 void error_loc(const char *s, ...)
 {
 	loc_info_t cur_loc = CURRENT_LOCATION;
@@ -88,6 +76,12 @@ void error_loc(const char *s, ...)
 	exit(1);
 }
 
+/* yyerror:  yacc assumes this is not newline terminated.  */
+void parser_error(const char *s)
+{
+	error_loc("%s\n", s);
+}
+
 void error_loc_info(const loc_info_t *loc_info, const char *s, ...)
 {
 	va_list ap;

tools/widl/utils.h

@@ -33,7 +33,7 @@ char *xstrdup(const char *str);
 #define __attribute__(X)
 #endif
 
-void parser_error(const char *s, ...) __attribute__((format (printf, 1, 2))) __attribute__((noreturn));
+void parser_error(const char *s) __attribute__((noreturn));
 int parser_warning(const char *s, ...) __attribute__((format (printf, 1, 2)));
 void error_loc(const char *s, ...) __attribute__((format (printf, 1, 2))) __attribute__((noreturn));
 void error(const char *s, ...) __attribute__((format (printf, 1, 2))) __attribute__((noreturn));