patterns: Fixed a few errors

includes/std/mem.pat

@@ -1,5 +1,3 @@
-#pragma once
-
 /*!
     Library for doing raw memory accesses and other low-level operations.
 */

patterns/minidump.hexpat

@@ -4,7 +4,7 @@
 #pragma MIME application/x-dmp
 
 import type.time;
-import type/types.win32;
+import type.types.win32;
 import type.size;
 
 using RVA = ULONG32;

patterns/usb.hexpat

@@ -138,12 +138,12 @@ struct DeviceDescriptor {
     if (bDeviceClass == InterfaceClass::Hub) {
         HubInterfaceSubClass bDeviceSubClass;
         if (bDeviceSubClass == HubInterfaceSubClass::Hub)
-            HubInterfaceProtocol bDeviceSubClass;
+            HubInterfaceProtocol bDeviceSubClassProtocol;
         else
-            u8 bDeviceSubClass;
+            u8 bDeviceSubClassProtocol;
     } else if (bDeviceClass == InterfaceClass::AudioVideoDevice) {
         AudioVideoDeviceSubClass bDeviceSubClass;
-        u8 bDeviceSubClass;
+        u8 bDeviceSubClassProtocol;
     } else {
         u8 bDeviceSubClass;
     }