replace calloc in response.c with quick fit approach

src/http/response.c

@@ -45,7 +45,7 @@ httpResponseCtor(void * _this, va_list * params)
 	this->status = va_arg(* params, unsigned int);
 	reason       = va_arg(* params, char *);
 
-	this->reason  = calloc(1, strlen(reason)+1);
+	this->reason  = memCalloc(1, strlen(reason)+1);
 	strcpy(this->reason, reason);
 
 	return 0;
@@ -57,7 +57,7 @@ httpResponseDtor(void * _this)
 {
 	HttpResponse this = _this;
 
-	FREE(this->reason);
+	MEM_FREE(this->reason);
 
 	PARENTCALL(_this, Class, dtor);
 }