Remove all uses of names starting with underscore

src/base/strings/str8/str8.c

@@ -115,6 +115,11 @@ void wpStr8Set(WpStr8 *str, u64 index, c8 c) {
 	str->buf[index] = c;
 }
 
+void wpStr8Clear(WpStr8 *str) {
+	memset(str->buf, 0, str->capacity);
+	str->size = 0;
+}
+
 void wpStr8PushBack(WpStr8 *str, c8 c) {
 	if (!(str->size < str->capacity)) {
 		return;