Switch to using Allocator in dstr

dstr/include/dstr.h

@@ -2,6 +2,7 @@
 #define DSTR_H
 
 #include "aliases.h"
+#include "mem_allocator.h"
 
 #ifdef __cplusplus
 extern "C" {
@@ -9,8 +10,8 @@ extern "C" {
 
 typedef struct dstr String;
 
-String *wapp_dstr_with_capacity(u64 capacity);
-String *wapp_dstr_from_string(const char *str);
+String *wapp_dstr_with_capacity(u64 capacity, Allocator *allocator);
+String *wapp_dstr_from_string(const char *str, Allocator *allocator);
 void wapp_dstr_update(String **dst, const char *src);
 void wapp_dstr_free(String **str);
 void wapp_dstr_concat(String **dst, const char *src);