Add missing arg_info doc_comment handling for accelerator/persist

Author: Christian Schneider

ext/opcache/ZendAccelerator.c

@@ -677,6 +677,7 @@ static void accel_copy_permanent_strings(zend_new_interned_string_func_t new_int
 					if (arg_info[i].default_value) {
 						arg_info[i].default_value = new_interned_string(arg_info[i].default_value);
 					}
+					arg_info[i].doc_comment = new_interned_string(arg_info[i].doc_comment);
 				}
 				accel_copy_permanent_list_types(new_interned_string, arg_info[i].type);
 			}

ext/opcache/zend_persist.c

@@ -652,6 +652,9 @@ static void zend_persist_op_array_ex(zend_op_array *op_array, zend_persistent_sc
 				zend_accel_store_interned_string(arg_info[i].name);
 			}
 			zend_persist_type(&arg_info[i].type);
+			if (arg_info[i].doc_comment) {
+				zend_accel_store_interned_string(arg_info[i].doc_comment);
+			}
 		}
 		if (op_array->fn_flags & ZEND_ACC_HAS_RETURN_TYPE) {
 			arg_info++;

ext/opcache/zend_persist_calc.c

@@ -306,6 +306,9 @@ static void zend_persist_op_array_calc_ex(zend_op_array *op_array)
 				ADD_INTERNED_STRING(arg_info[i].name);
 			}
 			zend_persist_type_calc(&arg_info[i].type);
+			if (arg_info[i].doc_comment) {
+				ADD_INTERNED_STRING(arg_info[i].doc_comment);
+			}
 		}
 	}