dinput.h: Rename wReserved to wReportId in DIDEVICEOBJECTINSTANCE.

(from: wine git, commit 2d629228ddd71d8c308da755c91b667a895dc4f8.)
diff --git a/mingw-w64-headers/include/dinput.h b/mingw-w64-headers/include/dinput.h
index 57d06a8..4e2d510 100644
--- a/mingw-w64-headers/include/dinput.h
+++ b/mingw-w64-headers/include/dinput.h
@@ -387,7 +387,7 @@
     WORD	wUsage;
     DWORD	dwDimension;
     WORD	wExponent;
-    WORD	wReserved;
+    WORD	wReportId;
 #endif /* DIRECTINPUT_VERSION >= 0x0500 */
 } DIDEVICEOBJECTINSTANCEA, *LPDIDEVICEOBJECTINSTANCEA;
 typedef const DIDEVICEOBJECTINSTANCEA *LPCDIDEVICEOBJECTINSTANCEA;
@@ -408,7 +408,7 @@
     WORD	wUsage;
     DWORD	dwDimension;
     WORD	wExponent;
-    WORD	wReserved;
+    WORD	wReportId;
 #endif /* DIRECTINPUT_VERSION >= 0x0500 */
 } DIDEVICEOBJECTINSTANCEW, *LPDIDEVICEOBJECTINSTANCEW;
 typedef const DIDEVICEOBJECTINSTANCEW *LPCDIDEVICEOBJECTINSTANCEW;